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Question by mayank1394 · Jun 01, 2012 at 02:00 PM · crashbuild-error

Game crashing after Build

Hello, I made a game in unity using some 3d objects and C# as the coding language. The game is working fine in unity, but when I build it for web or windows platform the, build crashes. according to error log of the crash (windows build) the only line i could understand is "Read from location 0000004c caused an access violation".

Please help me. how can i build it and what might be the exact problem ?

Thanx

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Answer by FormativeTech · Jun 01, 2012 at 02:25 PM

An object or variable that you're trying to access doesn't exist, so it's returning a NULL pointer as its memory address.

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avatar image mayank1394 · Jun 04, 2012 at 04:27 AM 0
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how can i identify which object/variable is causing the trouble ? I must here inform u that, i am instantia ting sevral objects in single script,using an array.The instantiating script works fine but in the console appears an error "UnassignedReferenceException",even though i have assigned the object in the script.

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Answer by Pangamini · Jan 24, 2013 at 01:52 PM

If it was a null reference from your script, it would raise an exception that is safely caught by the unity engine. Means that this is probably a bug in the unity engine.

But i have recently solved a problem leading to similar crashes, happened when i tried to instantiate / reference an object of a generic class without specifying generic parameters. EG:

 class StateMachine[of T(MonoBehaviour)]:

 

     def constructor(parent as object):

          .....

    ......

 

 

 class Monster(MonoBehaviour):

 

     machine = StateMachine(self)

 

     .........



This was causing the crash even in the editor whenever i clicked on the object containing this component (causing it to load and construct - the stateMachine initializer is called in the constructor).

In this case, the solution would be to replace the instantiation with proper generic:

 machine = StateMachine[of Monster](self)


As you have noticed, i am using boo, but it is (in this usage) very similar to C#... not sure if C# compiler would compile this code without generic parameter, nor if it's a bug in the compiler or the unity engine.

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