Hi,
Using Win 7, FEBE 8.0.2 and Firefox 31...
My selective backup misses NoScript, Inspect Context and Profilist.
When I do 'List Installed Addons', they show as vundefined (unknown):
Adblock Plus v2.6 (extension)
Add-ons Manager Context Menu v0.4.2 (extension)
CLEO v6.0beta (extension)
Canadian Weather v1.5.0 (extension)
Customize Palette (Metal Lion version) v1.0.3 (extension)
DOM Inspector v2.0.14 (extension)
Default v31.0a2 (theme) (disabled)
Disconnect v3.11.0 (extension)
Download Status Bar v9.1.0 (extension)
Element Hiding Helper for Adblock Plus v1.3 (extension)
Extension Auto-Installer v1.2.1 (extension)
FEBE v8.0.2 (extension)
FT DeepDark v10 (theme) (disabled)
GitHub Extension Installer v1.5.0 (extension)
Gmail Notifier (restartless) v0.4.1 (extension)
Greasemonkey v1.15 (extension)
HP Smart Web Printing v4.51 (extension) (disabled)
InspectorWidget v4.04.20121231 (extension)
InstantFox v2.8.8 (extension)
LastPass v3.1.1 (extension)
Lazarus: Form Recovery v2.3 (extension)
Menu Filter v5 (extension)
Metal Lion Australis Scrollbars II v2.0.1.5 (extension)
Metal Lion Australis Tiger SP v2.0.1.7.7 (theme)
NoSquint v2.1.9 (extension)
Open Bookmarks in New Tab v0.1.2012122901 (extension)
Print Edit v12.2 (extension)
Profilist@jetpack.xpi vundefined (unknown)
QuickFox Notes v2.8.4 (extension)
Restartless Restart v9 (extension)
Session Manager v0.8.1.1 (extension)
Show my Password v2.0 (extension)
Simple Clocks v2.4.1 (extension)
Simple Timer v2.0.2 (extension)
Stylish v1.4.3 (extension)
User Style Manager v1.1.1 (extension)
WOT v20131118 (extension)
inspectcontext@max.max.xpi vundefined (unknown)
{73a6fe31-595d-460b-a920-fcc0f8843232}.xpi vundefined (unknown)
39 total, 33 extensions, 3 unknowns, 3 themes