this software is extremely frustrating. it couldn't location files that were in the GIMP bin folder, so i copied them to the plugins folder. each time i copied the one it couldn't find, it couldn't find a different one. once i'd finally copied all of them it asked for my install of GIMP now gives me all kinds of fatal errors. i wish you would design this to better seamlessly integrate in with GIMP while taking into account that it will be modified moving forward and the person that pushed me to use this software wouldn't depend on third party applications in order to do basic work. in short: less frustration plz. *grumbles*
You didn't mentioned in what Operating System you are you having this issue, hence I can not help you.