I'm using the latest version SIlverFast 8.0.1r26 in Win 7 x64. Whenever I try to scan at 7200dpi using Multi-Exposure, iSRD, and AACO, the program crashes at the "processing" stage. If I disable iSRD but keep the other tools, the scan will proceed successfully. The problem is that I need all these tools. Resetting SilverFast in the Service Dialogue does not help. My scanner is Plustek OpticFilm 8200i. Thanks for your help.