This must be a recent thing and I've no idea why, the last mods I recall actually working are the 1.1.3 update and a redirect mod about August..
Now when I use the pac-man it tells me everything tested ok, I then proceed and it tells me everything is installed and can be used. But it isn't
Tried it with the 1.1.4 upgrade said it had but hadn't , had to manually alter files.
and just when trying to install googlemap mod (I altered xml to recognise 1.1.4)
Seems similar to the problem I'm having. I posted about it in another topic.
http://www.simplemachines.org/community/index.php?topic=194347.0
Is this issue solved or do you still require assistance?