Upgraded to Unity3 - receiving VerificationException - Binary instruction applyed to ill formed stack - Help!

Question

For the life of me, I can't figure out why I'm receiving this runtime exception. I've just upgraded to Unity3 Pro from 2.6 on the Mac and am porting over our game to Unity v3 and are receiving this runtime exception:

VerificationException: Error verifying GameScript:SetGameState (eGameState): Binary instruction applyed to ill formed stack (Complex x Complex)
GameScript.Start () (at Assets/Scripts/GameScript.js:100)

The problem is related to one of our game files.

We declare at the top of the file an enum called eGameState.

enum eGameState { Start=0, LevelComplete=1, LevelStart=2, Playing=3, GameOver=4, LoadMainMenu= 5, Restart = 6 };

var gGameState : eGameState = eGameState.Start;

We have a function called SetGameState defined as follows:

function SetGameState( theState:eGameState ) { var oldGameState:eGameState;

oldGameState= gGameState;

// update game state to new one gGameState= theState;

.. more code...

}

We call SetGameState() function from this file and other files as follows..

function Start() { // code...

SetGameState( eGameState.LevelStart );

}

Everything compiles fine.. when running receive this runtime exception What the heck are we doing wrong (or what has changed in Unity3 to cause this to be a problem?

VerificationException: Error verifying GameScript:SetGameState (eGameState): Binary instruction applyed to ill formed stack (Complex x Complex) GameScript.Start () (at Assets/Scripts/GameScript.js:100)

Answer 1

Best Answer

Answer by Shiraz · Oct 02, 2010 at 06:35 PM

Turns out that references to some of my prefabs when imported into Unity3d v3 (from my 2.6 project) were set to null. When the code referenced/tried instantiating the objects at runtime - it threw the ambiguous exception above that was referencing the wrong section/line of code entirely -making it difficult to identify the real problem.

I have since put in checks to make sure my prefab's aren't NULL (should have done that in the beginning). Anyways' this was a difficult to figure out.. but well.. it's working again.

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Answer 2

Answer by Lucas Meijer 1 · Oct 02, 2010 at 09:10 PM

Hey Shiraz,

This error is not related to your prefab problem (allthough fixing your prefab problem might make this bug go away). This looks like a legit bug in Unity3 that I would love to fix. Could you send the project that makes this happen in a bugreport, and mention the casenumber here? (UnityMenu->Help->Report a problem). Thanks a lot!, Lucas

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Matt 11 · Dec 14, 2010 at 08:16 PM 0

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hey, i'm also getting a similar exception, but my issue seems to be more related to this thread post: http://forum.unity3d.com/threads/60589-VerificationException is there any timeframe for a fix to this bug?

specifically i get this exception when switching between standalone player and webplayer builds.

Upgraded to Unity3 - receiving VerificationException - Binary instruction applyed to ill formed stack - Help!

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