Now on 2014SP5 EV is OK. I had the same problem on SP4
Encountered this on one system running SW 2013 Premium SP2, but, to the best of my knowledge other systems running 2013 here are fine, as was this system at one time.
No solution found or fix attempted (e.g. Repair Installation form DVD), I just save as .TIFF and convert to .JPG (and crop, etc.) in a photo editor, then delete the large .TIFF; an extra step, but I've not gotten to chasing the root cause.
Works OK for me with SW14-SP4. I prefer PNG rather than JPG.
Are you able to create JPG formats with other image editing programs?
Works fine on my SW14 SP3.