By any chance did you add a repeat parameter ? Remember it needs dots on both sides or it will not work >_ < also how many psd's is in youjr project, could be your memory is not enought, the program if you ahev too many PSD (even so you are not using them on the texture atlas) it will open that psd to create the image and it will not have enough memory to open lets say 10 psd's at onceIt is a portrait model, so it shouldn't be too much layers, I just have this one. For the repeat parameter, it could be that, because I was trying to fix a crying animation which wasn't doing a loop like it was supposed to do, so I tried to add repeat parameter.