I've followed all the above steps. Clean removed the old version mbam-setup-2.0.4.1028 (This one works OK) Installed the latest version of MWB 2.1.4.1018 and it still crashes on Heuristic Analysis. I've checked the disk for errors, none found and I've scanned the system with "adwcleaner" and it cant find any malware on my system, I've also run a scan with "Avast", nothing there. I've attached a copy of the new log files as requested. The only thing that's changed on my system is the new version of malwarebytes Any other suggestions? Should I put the old version back on, that's seems to work ok. Addition.txt CheckResults.txt FRST.txt