Ive found a quite bad bug (or lack of feature) in this hack. If you use the option Rebuild Post Cache in admincp all mediatags will stop working.
Ill try and see if I can figure out how to make a temporary fix myself but it would be really great if this would work out of the box .
Edit: I fixed this for now by doing a
Code:
TRUNCATE TABLE postparsed
and then letting vB rebuild the posts the first time someone views them. Not a good fix as its takes a bit longer to load threads the first time someone views them but at least it works.