<p>I was using my T90 and 300 TL flash, and they were working, fine, until they weren't. For some reason I kept getting the same reading in the VF regardless of flash mode or setting on flash or camera: shutter speed 1/250, f32 (flashing indicator) and the M indicator. The FEL mode won't work at all; the spot meter button lights up the side bar but there is no display there. The camera lens is set on A. This is true for this 300 TL flash unit on both T90 bodies I've tried it on. Has anyone else experienced this?</p>