If there isn't, try to move all .fhp files to desktop for example, and try again. It should export; but if it doesn't, you maybe modificate where to export the fhp file.
If it doesn't work, try to reinstall FH. Make sure you back-up important files like items, presets, textures, etc. DELETE THE WHOLE FERALHEART FOLDER. It should work by now.
If it doesn't work, then maybe it's an account problem.