I have experienced the issue of PSD format rejection with ArtRage, Painter and Exposure software. My workaround is to load the Flame Painter PSD file into Photoshop first and then save the file in PSd whch overwrites the file with the correction.
Another issue is that Escape Motion products do not include the color profile with exported/saved files. Therefore I will load the files into Photoshopto and assign the 'Adobe 1998' color profile and save to overwrite. I urge Escape Motions to fix this defect and include the color profile witn files that are exported/saved in PSD, TIF, JPG and PNG formats.