No problems with Win7 Pro, 64-bit. As suggested above, do not install in the default directory. I made a new directory named C:Games/Ubisoft/... and it went in just fine. If you already had an install, you should first not only delete all files for SH4 in the default directory, but also the SH4 files in your "Documents" directory. The only crashes I get now are for trying to use time compression too close to a harbor while attempting an external view of some kind. It seems to overload my twin SLI ATI 5800 cards!
