The Bluefish-2.0.0-setup.exe installer had a bug during uninstall. This installer is now replaced with Bluefish-2.0.0-1-setup.exe which fixes the issue.
The following extensions are be removed by the faulty installer during uninstall:
There are three registry files corresponding to Windows default settings to fix the issue:
minreg.reg: This is the critical fixes only for asp, js, and vbs to be used after uninstallation.
fullreg.reg: This is all of the original values for the listed extensions and can be used for a full restore to default settings after uninstallation.
bkreg.reg: This file is for use while Bluefish is still installed. It will set the stored class for asp, js, and vbs to the default value. As a result the uninstaller will handle them properly.
For users who haven't or aren't planning to uninstall I'd recommend merging bkreg.reg so if they every do uninstall it will be done properly. They should do this in conjunction with not uninstalling a version before 2.0.0-1 as this revision installer will also leave the PersistentHandlers's set for the other mentioned filetypes as well. The next release installers (2.0.1 or whatever it may be) will make this fix automatically so bkreg.reg would not be needed for users after that point