SoftICE crashing on Windows 2003

If Windows 2003 SP1 would run the same way as Windows XP SP2, then SoftICE would run, since it runs well on WinXP SP2 for me.

I don't have Windows 2003 SP0, since the CD I copied was the official Windows 2003 CD with SP1 already integrated. (no homemade "all-in-one" crap from the internet)

I'm no MSDN subscriber, so I don't have access to the debug version of Windows 2003 SP1.

I checked at what place the code is crashing, but even if it's totally clear what the code does (no unknown variables), I don't understand why it works on Windows XP but not on Windows 2003.

xor         eax,eax
add         eax,[000130C7]     ; hard coded value: 120h
add         eax,[000130CB]     ; hard coded value: 4h
mov         eax,fs:[eax]
add         eax,[000130CF]     ; hard coded value: 34h
add         eax,[000130D3]     ; hard coded value: 10h
mov         eax,[eax]
add         eax,[000130D7]     ; hard coded value: 18h
mov         eax,[eax]          ; <-- crash location
mov         [edi][1C],eax
retn

So, in short one could write is as:

mov     eax, fs:[124h]
mov     eax, [eax+44h]
mov     eax, [eax+18]     ; <-- crash location

Even if I'm not aware what value "fs" has a this time, I don't expect it to be the reason for the crash.