Thats weird... I'm assuming you use SU 8? I had something similar to this happen with LibFredo once, I had upgraded from 4.6 to 4.7, deleted the 4.6 files in the plugins directory, but SU told me I still was using 4.6. I fixed it by simply deleting ALL Fredo6 .rb's and folders from my plugins directory and reinstalling them. You might want to try that, its all I can think of.