Assegnate 1 su 5 stelle

Thunderbird 31.3.0 on Arch Linux
Folderpane 0.61

Preferences in the Addons-Manager returns an error message:

XML Parsing Error: undefined entity
Location: chrome://folderpane/content/folderpanePref.xul
Line Number 263, Column 19: <menuitem label="&filemessageschoosethis.label;"

While the custom order of folders is still displayed it can not be canged any more and other options (like excluding certain folders from te messaging of new mails) do not work any more.

I tried to remove te file localstore.rdf but tis did not fix the problem.