MediaMonkey 4 supports a 'Portable' mode, in which the application can be installed
to a USB key or drive without affecting the System within which it's being used.
If MediaMonkey is set for 'Portable' mode, then it cannot be installed to a location
such as the standard .../Program Files directory--it must be installed to a location
that is independent of the host system.
Otherwise, the following error will result:
Cannot create file "C:\Program Files\MediaMonkey\Portable\MediaMonkey.registry"
To resolve, uninstall MediaMonkey, and either:
a) install it to the same location in non-Portable mode
b) install it to a different location