Edit doesn't show files

[hopalongrock]

I don't know how it happened, that Edit doesn't show files
I tried restart, Ignore Correct, no help.
Fortunately I have ini backups, I restored one, the problem has gone.
Some interesting entries in the bad ini and the good ini:

fileformat=3 instead of fileformat=0
crpls_usename=%L% doesn't exists
crpls_usesort=%R% doesn't exists
crpls_sub=0 doesn't exists
crpls_type=0 doesn't exists

Please helpl, thanks

[hopalongrock]

I found, fileformat=0 was originally, it is [*.*] , the option without name (anonymous) above "File mask".
fileformat=3 is .mpc, .mp+, .mpp (Musepack) - I could set it accidentally somehow.

[jtclipper]

The combobox below 'Auto scan" is the option 'fileformat=' and it filtered out all .mp3 files,
the other options do not matter they are used in the 'create playlists' dialog (right click on the directory treeview on the left)