CODE
[VNCViewer 3]
LangSecRef=3024
Default=True
Detect=HKCU\Software\ORL\VNCviewer
RegKey1=HKCU\Software\ORL\VNCviewer\MRU


Should be:

CODE
[UltraVNC]
LangSecRef=3024
Default=True
Detect=HKCU\Software\ORL\VNCviewer
RegKey1=HKCU\Software\ORL\VNCviewer\MRU