Hi,
I had the same problem. In the File Converter section it had an extra -p 4.
Using reset removed these, and the files are now converting.
Edit Preferences (under 3 dashes top left) > File Converters
Ogg Enabled has "-q 0 -p 4 - -o [outputfile]" doing the reset next to Ogg enabled then gives "-q 0 - -o [outputfile]"
Hope it helps someone else.