We can't tell you either unless you can supply the error code.
Run SED or WED with -diag and have a look in the acknex.log it should give you an error code in there. Then you can search the manual for that particular error code. Most times however it's becuase there could be a while() loop without a wait().
Windows XP SP3 Intel Dual Core CPU: E5200 @ 2.5GHz 4.00GB DDR3 Ram ASUS P5G41T-M LX PCIE x16 GeForce GTS 450 1Gb SB Audigy 4 Spyware Doctor with AntiVirus