Simulink accelerator compile error

Hi,

I'm trying to run my Simulink/Simhydraulics model in accelerator mode, but during building of the model I get an error:

Cpp: Input buffer overflow!!!
 
C:\PROGRA~1\MATLAB\R2010A\BIN\MEX.PL: Error: Compile of 'System_52d04068_ds.c' failed.
 
gmake: *** [System_52d04068_ds.obj] Error 9
### Real-Time Workshop build procedure for model: 'System' aborted due to an error.

Does anyone know what might be the cause of the error? The model is quite big, but it runs fine in normal mode.
Cheers
Jos