Run-time error '339':
Component 'acThumb.ocx' or one of its dependencies not correctly registered: a file is missing or invalid
This problem can show up if something went wrong when installing SmartPurger typically on Windows Vista.
Make sure acthumb.ocx is in C:\Windows\System32
Start the Command Prompt as administrator by right clicking and select Run as administrator.
Then run these commands:
regsvr32 /u "C:\Windows\System32\acThumb.ocx"