MacOS build of the same game made on Windows is not working.

Questions & Answers
1

Hello,

I recently finished making a game on unity3D on Windows 10 and then I tried to import the game to my Mac via the unity cloud service. (I also tried with a USB stick and with google Drive)

Once I downloaded the project on unity3D Mac version with the exact same build I have on windows, it gives me 90+ errors and is unplayable. I really don’t know what is happening, its the same game saved on the cloud but its far from working on the Mac version and works perfectly fine on Windows.

I noticed that my version of unity on mac has a folder called packages and I think that’s giving most of my errors, but I’m not sure because I did some research and those errors are likely not the ones to make the game unplayable.

Here are some of the errors I have:

NullReferenceException: Object reference not set to an instance of an object
MakeMap.SetParentToLevel () (at Assets/Scripts/MakeMap.cs:141)
MakeMap.Start () (at Assets/Scripts/MakeMap.cs:148)

NullReferenceException: Object reference not set to an instance of an object
DetectGameOver.DetectIfIsUpOnTile (UnityEngine.GameObject tilesType) (at Assets/Scripts/DetectGameOver.cs:107)
DetectGameOver.DetectIfPlayerEndTile () (at Assets/Scripts/DetectGameOver.cs:124)
DetectGameOver.FixedUpdate () (at Assets/Scripts/DetectGameOver.cs:35)

Failed to change file flags for ‘/Applications/Unity/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.modules.ai/package.json.meta’. errno: 13

Failed to change file flags for ‘/Applications/Unity/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.modules.animation/package.json.meta’. errno: 13

Failed to change file flags for ‘/Applications/Unity/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.modules.animation/package.json.meta’. errno: 13

Failed to change file flags for ‘/Applications/Unity/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.modules.animation/package.json.meta’. errno: 13

Failed to change file flags for ‘/Applications/Unity/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.modules.animation/package.json.meta’. errno: 13

…and I skipped a lot.

Thank you so much for your time and help!

2

you have to look into the scripts and see what is causing the NullReferenceExceptions, for example MakeMap.cs line 148
If you know how to use the debugger, set a breakpoint on that line and see exactly what reference is null (in case there are more than one)