When I add my comp to the render queue and I select the Output to FLV or F4V and then click Format options I get the File I/O Open error in export settings. It only happens thus far with those options. I have not tried them all, but I tried many. Has anyone else experienced this?
I can render FLV or F4V as long as I to not alter the settings. When I try and change the export settings I get the error.
This thread has all sorts of solutions for AEGP Plugin Media IO ERRORS which at least one is bound to fix your problem. It has everything from matching output, to even making your own presets from scratch. Read the whole thing and I hope you have luck.