ISE 7.1 synthesis problems

Hi all,

I'm trying to synthesize a design using ISE 7.1 and am getting segmentation faults. The .srp file only gives me the foll message:

make: *** [leon3mp.ngc] Segmentation fault

How do I debug this? Has anybody encountered segmentation faults before? There isn't anything else in the warnings etc that could indicate a seg fault being imminent.

Thanks!