MeesterButts

I cannot for the life of me get this to work. Multiple Google searches and probably over 45 minutes looking for answers so I finally signed up for this forum. I am still using 0.25 for this project because I have finished a large portion of my system myself, but the trusses in this pack are so good I simply must have them, is this a problem? If so, does anyone have a working copy for that version?