Having discovered the excellent SafariKeywordSearch thanks to an answer here, I'd now like to get rid of the warning which Safari pops up on launch about Keywurl not loading because it hasn't been tested with Safari 5.1.
I thought I had circumvented this by deleting the Keywurl bundle from ~/Library/Application Support/SIMBL/Plugins (it had only been installed locally, not globally), but Safari still stubbornly pops up a warning. In actual fact, I was seeing two instances of the incompatibility popup before I performed this deletion, but that second one still persists. I've used Spotlight in an attempt to track down the phantom second instance, but without success.
Has anyone any idea where it might be lurking?