@Harald T
You are using the following Code on Hook forumdisplay_complete
PHP Code:
//############################Gallery-Modification###########################
if ($displaythumbs == true)
{
eval('print_output("' . fetch_template('forumdisplay_gallery') . '");');
}
else
{
eval('print_output("' . fetch_template('FORUMDISPLAY') . '");');
}
//############################End Gallery-Modification########################
print_output() causes halt of Script execution, which means that all other Plugins using the same Hook will not be executed, if they would be executed after your Code.
Please change that in order to keep compatibility with other Hacks.