Question: are you trying to load a fully functional M4 or just the object file? The icon you are referring to is a cr2 file that calls on the object file as part of the figure. It appears to me that the cr2 reference path has changed or become overwritten. You can either reinstall M4 to correct the problem with a overwrite or manually edit the cr2 to point to the correct path. I do know that the cr2 should refer to blMilMan_m4b.obj on 3 instances within the file.