WARNING Avoid common mistakes Read the DOOM SPECS: Sorry. still unavoidable. Sprite: DOOM Hangs up on startup when loading your PWAD Flats: DOOM crashes when viewing some You forgot to use DeuSF -app or DeuTex -merge on your PWAD, so the complete list of FLATS and SPRITES is not present. If some sprites are missing, and DOOM hangs. If some flats are missing, DOOM crashes. Hall of Mirror with new textures: Care has been taken in DeuTex to first load the old TEXTURE1 before adding new textures. However, please first create your level, build the nodes and reject, then add the new textures. I don't do that myself, and still it works, but leonardc@halcyon.com reported that error. It seems to be a problem with node builders, but I'm quite confused... Tutti Frutti and Medusa Effect: see the DOOM specs, and format.txt Doom reports a void column and exit: Use DeuTex -check on you PWAD before running DOOM. It will tell which textures still have void columns. Other bug: Mail me a description of the bug, together with your configuration file. Don't expect a quick answer, though.