I downloaded Doom Builder the other day and from the start there were problems, there were no textures, so I configured the Doom 2 IWAD to Doom 2, now here comes the real problem: the only texture I can use from Doom 2 is BIGDOOR1, when I go to change the sidedefs the only texures are BIGDOOR1 and "-" (which is a blank one.)
Could anyone help me out?