Trying this again. I have had this problem since August and my previous request for help looks like it has been archived. I cannot update Tweaking.com v3.9.0.4. I have tried with versions 0.5 to 0.12. I have the Pro version. I am on Windows 7 Home Premium. I have tried uninstalling/reinstalling, turning off Norton, in safe mode (which worked temporarily until my PC went back to normal mode), even using Tweaking.com (version 3.9.0.4) to repair but nothing has worked. The error message I receive after updating which I am always told is "successful", is "Error at hooking API 'NtProtectVirtualMemory' Dumping first 32 bytes". Please see screenshot with the rest of the numbers it gives me in case this is helpful. Version 3.9.0.4 works perfectly okay so I have reverted back to this for now and without updating. On uninstalling the newer versions I have tried, I see the same error message despite it stating "uninstall successful". Thanks.