I'm using 1.5 and 1.4.. not at the same time...but this issue happens with either. For some strange reason I have a base folder under my Jedi Academy directory. Initially it had maps and mapextra's pk3 in there. So, I dumped all my texture, models, shaders, scripts, and sounds in that folder and now things load. I'm still missing textures/shaders in many texture sets and my models show no textures, just the red/black shader missing. The funny thing is my basepath isn't pointed to that directory, yet, it loads. I never had any issue within the game itself. No bugs, no missing textures, ect... After I come home from fishing tonight I may just reinstall Jedi Academy fresh even though its only 2-3 months old and try it all over again.