I also use Palemoon 8 portable on my laptop (Windows 7) and PC (Windows XP) - the same version placed on pendrive. Sometimes when I'm not closing PM properly I have this error "Palemoon is still closing".
On Windows 7 I can find this catalog and delete it without any problemms. But on WinXP I can't find it. I was searching whole system for Palemoon forders or files but I've found nothing. I can't use it anymore on PC because I have this error. Do anyone have some idea what to do?
It's a hidden folder.
I got this from About, long time since I have used XP.
"Open My Computer.
From the Tools menu, choose Folder Options....
Click on the View tab in the Folder Options window.
In the Advanced settings: text area, locate the Hidden files and folders category.
Note: The Hidden files and folders category should be viewable at the bottom of the Advanced settings: text area without scrolling down. You'll see two options under the folder.
Choose the Show hidden files and folders radio button under the Hidden files and folders category.
Click OK at the bottom of the Folder Options window.
You should now be able to view all files and folders with the hidden attribute turned on."