I bought MB Premium and installed it on my desktop computer. Now I have made several failed attempts to get it installed on a Samsung NC20 Netbook (Windows XPsp3). I took the following steps: 1. uninstalled a previous non-functioning MB installation. 2. copied the file mbam_premium.exe to the netbook's solid-state hard disk 3. tried to disable Avast anti-virus (but couldn't find how to do it). 4. running the exe produced the following error message: Internal error. Expression error 'Runtime Error (at 57:177). External exception E06D 7363. 5. installation continued with the same error message occurring at least once more. 6. installation terminated with: Runtime Error (at 49.252). External exception E06D 7363. 7. attempts to launch MB failed with a Windows Error: AppName mbam.exe AppVer. 1.0.0.50 ModName: msvcr100.dll ModVewr: 10.0.40219.325. Offset: 0008d6fd 8. previous attempts at installation produced similar errors but I was able to open Chameleon afterwards. Every Chaneleon test I tried showed these errors: Response from update: Failed to start the update then MalwareBytes Anti-Malware has terminated -- unable to start the scan. I hope someone here can help me resolve this problem. Vic