I've been using Rikaichan for years with no problem. Now it crashes Firefox every time I try to use it, giving me an error message about indexing for dictionaries. I have all the dictionaries installed! I am considering downgrading to a previous version of Firefox so I can get Rikaichan back. Has anyone else had this problem?

I have tried uninstalling and re-installing Rikaichan, but to no avail.