I have the OM-D EM-5, I tried using the little flash unit that came with it but it just wont fire . I went to "menu" and the X-Sync is set to 1/250; the Slow limit is set at 1/30; and the compensation is set to "off". I went to "OK" and invoked the control panel, the Flash is set to "flash Auto", and the compensation is set to "0". I also tried the "full" in the flash setting with equal results. I tried shooting in "AUTO" mode as well as in Manual, Aperture priority and shutter priority. No matter what I tried the little flash unit would not fire either with the flash head popped up or pushed down.... What could be the problem? I was also having problems with the FL 600-R the other day, but I think I did get it to fire but I cannot remember. Please tell me what I might be doing wrong. Thank you in advance!!