StackOverflowException: The requested operation caused a stack overflow. When an IAP fails.

Questions & Answers
1

Hi!
I’m trying to set up an IAP system in my game, and when you click cancel, or click away from the IAP on the Android app, it crashes the game.
I tested it in the editor and it spat this out:

StackOverflowException: The requested operation caused a stack overflow.
UnityEngine.Object.op_Inequality (UnityEngine.Object x, UnityEngine.Object y) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.BaseInvokableCall.AllowInvoke (System.Delegate delegate) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)
UnityEngine.Events.InvokableCall`2[T1,T2].Invoke (T1 args0, T2 args1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Events.UnityEvent`2[T0,T1].Invoke (T0 arg0, T1 arg1) (at <ab7de6937a4448b0a6ccd59e9820599a>:0)
UnityEngine.Purchasi<message truncated>

I have no clue why this is happening, and I am still quite a beginner to Unity Development, so I may be being a complete idiot here.

2

Same problem here, did you find out what it was?

3

Without going into technical details, StackOverflowException basically means infinite loop.

And you can notice that your log message is this call, repeating until CPU had enough:

UnityEngine.Purchasing.IAPButton.OnPurchaseFailed (UnityEngine.Purchasing.Product product, UnityEngine.Purchasing.PurchaseFailureReason reason) (at Library/PackageCache/com.unity.purchasing@4.1.4/Runtime/Codeless/IAPButton.cs:210)