I've played episodes 2 and 3 of Heretic with additional textures/models/music, without problems. But in e4m1 at the location pointed in the map (see first screenshot), when the platform rises, instead of showing the floor texture and allowing to walk over it, the path is blocked and it has no texture. The debug log didn't seem to mention anything related, but if you need it (or any other information) please ask and I'll provide it. Thanks

In Heretic these Doom-type linespecials work a bit special: 20 S1 "Floor Raise to Next Higher Floor (changes texture)"; 22 W1 "Floor Raise to Next Higher Floor (changes texture)"; 68 SR "Floor Raise to Next Higher Floor (changes texture)"; 95 WR "Floor Raise to Next Higher Floor (changes texture)"; 47 G1 "Floor Raise to Next Higher Floor (changes texture)"; They are usable only once in Heretic. They raise the tagged floor to the first next floor and change the texture. But after that the tagged floor can't be moved by the same or other line triggers any more. Vavoom-Heretic handles those types as in Doom where the tagged floor can be moved again and again without limits. Here's a test wad to check those line types. (Heretic E1M1) In Heretic/DosBox activating one of the line triggers makes the other triggers dormant; they do nothing, they don't change switch texture or make sound.

Here's the test wad. (Heretic E1M1):

Thanks for the information, I've already found that bug before, but I kept forgetting to fix it... now that you found the specials that are at conflict it will make it easier to fix <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->, nice work!

Fixed.