Can't uninstall InDesign CS5.5 plugin (4.5.0b371)

I can’t uninstall the InDesign 5.5 Font Handler. The Status column says “Installed”, but when I click Uninstall, I get “Uninstaller not found”.

In the past, I’ve uninstalled MT, tried v5.0, uninstalled that, reinstalled 4.5 again, and restored a (v4.5) vault backup before now, so I suspect I’ve got some cruft sticking around somewhere that’s causing the problem. Is there any way to clear the “Installed” flag, or manually uninstall, or something else I need to do?

I’m sorry for the inconvenience.

Please go to the Adobe plugins folder, e.g.:
C:\Program Files\Adobe\Adobe InDesign CS5.5\Plug-Ins

and from there do delete the folder
HLFontHandler

Then reboot your computer. This should allow you to install the new version of the plugin.

Let us know your results.