Can't edit Bookmarks toolbar

Question

Hello,
A few updates ago, for Firefox, made it so that I cannot edit my bookmarks toolbar. I can't delete anything on them, but I can add them and move them if I open up the sidebar. I can't move them around any other way. Instead of a drop box asking for what I want to do, like normal, whenever I right click a bookmark a little white square pops up over the bookmark instead and won't let me do anything.
I just installed the latest Mozilla update and it did not fix the issue. I tried the following:
1) Remove all extensions, add ons, themes and other things. Restart Firefox.
2) Clear cache of computer
3) Updated
The only thing I haven't done is reinstall, because I don't want to lose my bookmarks, especially those in the quick access toolbar (the one I can't edit).
I uploaded an image of what it does. I circled the box in red.
Thank you for reading and for any and all help.

Answer 1

''Twixmonkey [[#answer-672487|said]]''
<blockquote>
How can I remove previous versions of a plugin? It seems to remove them all.
</blockquote>
Type '''about:plugins'''<enter> in the address bar. Now search for the plug-in.
Example;
'''Adobe Acrobat'''
'''File:''' nppdf32.dll,nppdf32.dll
'''Path:''' C:\Program Files (x86)\Adobe\Reader 11.0\Reader\browser\nppdf32.dll,C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AIR\nppdf32.dll
'''Version:''' 11.0.9.29
'''State:''' Enabled
Adobe PDF Plug-In For Firefox and Netscape 11.0.9
This will show you the path to that program. Copy the '''Path Only.''' Also
note the name of the file, and remember it. Now '''Close Firefox.'''
Open your file browser and paste the path in the address bar.
Find the file, and delete it. Now you can restart Firefox.
'''Warning !''' Remember to delete the right program.