Hi Richard, I did as you suggested in your other reply to this bug (I didn't get a copy to my gmail account thus couldn't reply to that directly), but it didn't work.
I removed closed icedove, remove the rdf file, and started icedove. However, icedown then detected no extensions at all. I was expecting at least the enigmail extension, which always worked. I then closed icedove, restored the rdf file and started icedove again. It detected the enigmail extension but not the iceowl extension. :( ->HS