After I did a clean install of Windows 8 Pro X64 under a UEFI environment and formatting my boot/system drive as GPT I always get a message after RB runs as an auto backup, when I first start up my machine, stating that an error was encountered. Examining my backup folder it appears everything was backed up. I do not get any error message if I run RB manually. Prior to converting to UEFI I had no problems.
Here's what I have in the Event Log:
Faulting application name: TweakingRegistryBackup.exe, version: 1.4.0.3, time stamp: 0x5071e5f1
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x00000000
Faulting process id: 0x770
Faulting application start time: 0x01cdd6d791f65069
Faulting application path: C:\Program Files (x86)\Tweaking.com\Registry Backup\TweakingRegistryBackup.exe
Faulting module path: unknown
Report Id: d90fd982-42ca-11e2-bed1-c86000a0a026
Faulting package full name:
Faulting package-relative application ID: