Heyyo,
Huh? can't break vents?? err... that's hella odd cause I've never seen a PODbot have a hard time breaking anything.. usually the opposite where they try n' break things that aren't breakable.
Now, can you post what your liblist.gam file says in the forums for us please? also for your metamod your plugins.ini file. Since you know how to edit your plugins.ini file you already know you open it with notepad, so yeah, let's see what's going on there.
