Axapta Crash Dump File / exit code 487

One of our client pc’s (running XP SP II), while all others run W-2000 experience crashes (2 / 3 times a day) with messages following Axapta Crash Dump File for Axapta build 1951.2410 Crash : Exception 0xc0000005 caught (unspecified) in thread 0xff8 of process 0xfec. ------------------------------------------------------------- --# FV EIP----- RetAddr- FramePtr StackPtr Symbol 0 .V 006485a9 00000000 00000000 0012fb44 Mod: ax32[ax32.exe], base: 00400000h Stackdump exit code 487 (trying to acces unknown adres… (this was translated from dutch so exact message may differ in english version)…) Somebody can help me out here ? Pat