doesn't work after 0.9.1

[Alejandro Alvarez Melcon]

The plugin "plugger.so" which allows to listen to mpeg, avi, midi, etc
files
does not work after version 0.9.1. I get the following error message:
/home/amelcon/.mozilla/amelcon/l6f7xv3q.slt/Cache/475ADE62d01: No such
file or directory

This did not happen in version 0.9.1 but it already happened in 0.9.2
and again
the same in 0.9.3.

Is it possible to correct this behavior, thanks.