I have been using Firefox Portable for a while now and have not experienced any problems until recently. As of today, when I start FxP I get this error message:
"Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behavior when accessing security features."
Now when the window opens, most of my add-ons are missing or functioning strangely (only on some computers), I am unable to manage my add-ons (the add-ons window appears empty), and there are glitches in both the GUI and web pages (I was not even able to register for this forum in Fx because the CAPTCHA image would not appear).
My USB drive is not even close to full, but I noticed that the folders containing FxP were set to read-only. When I tried to clear it, it appeared as though the settings changed, but the error persisted and I discovered that the directories had reverted back to read-only by themselves (if they had ever truly changed to begin with). This is not a problem with my drive, because no other folders have this problem.
EDIT:
Upon further inspection, the files within the folders were cleared of the read-only attribute, but the folders still have the box marked (filled, not checked, which simply allows you to select one option or the other for all files in the directory). This confuses me even more, because this eliminates the one culprit that I thought was causing the problem. Any ideas?