Illegal exception concerning custom inventory (SOLVED)

[lese]

I started making a game using the -Empty Game- template.
After the main character has picked up an object during a test of the game I try to load his inventory window to see whether the object is there and I get this:
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Illegal exception
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An exception 0xC0000005 occured in ACWIN.EXE at EIP = 0x0041D7A2 ; program pointer is +6, ACI version 2.70.864, gtags (5,135)

AGS cannot continue, this exception was fatal. Please note down the numbers above, remember what you were doing at the time and notify CJ on the Tech forum.



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OK   
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I suppose there is something wrong with the scripting... I'm not sure how exactly I am supposed to add objects to a custom inventory in order that they appear in it.

Edit:

Everything is fine now! I don't need any help!

[strazer]

How did you fix it?

[lese]

Well, I think a simple resolution would be the actions "Show GUI" and "Hide GUI" which I hadn't noticed so far... I'm a novice only acquainted with the tutorial and few script commands...