Steve Hunter , Nov 15, 2006; 10:06 a.m.
This seems to be quite a common problem, which I believe is the camera shutter sticking which is more apparent for longer shutter times (someone correct me if im wrong). There has been quite a few posts on this subject -check out the older posts on the fd forum. You can get this repaired for around ?50 here in the UK (not sure where you are). In the meantime you may be able to press the battery check button under the side panel to reset the camera when this error appears (worked for me) rather than remove the batteries.