Driver Studio 3.2 hang-up on WinXP

I have a AMD64 CPU with less than 4GB RAM and I am running WinXP SP1a (32-bit) with all updates (expect SP2) installed. I am using the recent Driver Studio 3.2 release. My computer is a fresh system, so there is no protector's driver making me problems.

I have the video driver set to start at boot-up and SoftICE to start manual. When I launch SoftICE either with "net start ntice" or with the suplied "startsi.exe", it simply hangs itself. This is done by SoftICE putting itself into a endless loop ("EB FE") inside NTICE code. So the OS is locked but I still can call SoftICE with the key-combo and I can read the error messages.

The only message is "Int0E Fault in SoftICE at address XXXXXXX offset XXXXXXXX". Then there is also a stack and register dump and a message that SoftICE could not parse all symbols correctly. More at the top there is this highlighted: "*** API Hook Failure: MiCopyOnWrite".

Even if I don't have SP2 installed, I tried the /NOPAE and /NOEXECUTE=ALWAYSOFF settings, but without luck.

I also saw the "BREAKINSHAREDMODS" variable is not recognized any more, but I don't think that has to do with this.

Can anybody tell me what I am making wrong? or can anybody tell me what happened to the BREAKINSHAREDMODS variable?