IdleFW tried to load old UI controller, because of wrong value in Cenrep. Ui controller loading failed ( KErrNotFound ), because the dlls were missing which the plug-in links against.
<?xml version="1.0" standalone="yes"?>
<backup_registration>
<passive_backup>
<include_directory name = "Content"/>
</passive_backup>
<restore requires_reboot = "yes"/>
</backup_registration>