Facebook sdk 7.2 Cannot Overwrite header

Questions & Answers
1

Was using 7.1 sdk and then upgraded to 7.2. If I try to do a test in Unity as a webplayer build (I know this is going away, but for now, still using it) it gives the error

ArgumentException: Cannot overwrite header: User-Agent
UnityEngine.WWW.CheckSecurityOnHeaders (System.String headers) (at C:/buildslave/unity/build/Runtime/Export/WWW.cs:71)
UnityEngine.WWW…ctor (System.String url, System.Byte postData, System.Collections.Generic.Dictionary`2 headers) (at C:/buildslave/unity/build/artifacts/generated/common/runtime/UtilsBindings.gen.cs:125)
Facebook.Unity.AsyncRequestString+c__IteratorA.MoveNext () (at Assets/Facebook/Scripts/Utils/AsyncRequestString.cs:100)

This appears to be a problem with the facebook script trying to do something that unity doesn’t like. Anybody have a solution? Thank you for the help.

3

deleting the library and obj, means revert the platform back to PC. And actually switch back the platform will work.

2

I just bumped in this problem, apparently without upgrading anything. It seems I fixed it closing unity, deleting the library and obj folder and restarting. Try it out.