When you look at your 'walls' palate in the editor. Place the 4 wall frames in a row from left to right. The animation only works when you place the wall at the beginning of the sequence (so the frame on the left). Whenever you change any walls you will have to go into the 'Walls' menu, select 'Import Wall Textures', check the 'Animate' box for the row with the animated sequence. Then set the speed of the animation from 1-10. This speed will effect all animated wall if you are using more than one.
Fortcullis_Games
joined
As a solo developer I have released one title for sale so far - 'Blades of Gory' on Steam.