g-force said:

seventiesfilmnut said:

I also downloaded a different mt_masktools.dll (dated 27th Jan '06) from http://manao4.free.fr/

Oops, I forgot that that .dll is a bit tricky as well. I think I'm using Masktools v.2. Not sure of the date, but most likely at lease 2.0 alpha 27 which is the most recent listed on this page: http://manao4.free.fr/mt_masktools.html
but I noticed he also has some higher versions on the page that seventiesfilmnut listed.

...

-G

That was it!

I am using the different masktool.dll and now everything works!

I'm doing another encoding at the moment and can't wait to see the result.

Thank you, guys!!!