Illegal exception exception when running my game

[xil]

A player has just let me know they get the following error when they try to start my game (Aractaur).

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Illegal exception
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An exception 0xC0000005 occurred in ACWIN.EXE at EIP = 0x004A2B60 ; program pointer is +77, ACI version 3.4.0.3, gtags (16,320)

I cannot seem to reproduce this error in either Direct Draw or Direct3D, any ideas how I can try to debug it?

[Monsieur OUXX]

Ask him if he uses DirectDraw. If yes, make them use Direct3D. Dave Gilbert explained somewhere on the forums that he kept experiencing random error messages with players who used DirectDraw on modern laptops, with no way of troubleshooting.

[Crimson Wizard]

Your friend should get a crash dump in the game folder, could you upload it somewhere?