Rated 5 out of 5 stars

Addition does not work in FirefoxPortable 3.0.5... Also it is very a pity.

Import failed: [Exception... "Component returned failure code: 0x80520001

(NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIFileProtocolHandler.getFileFromURLSpec]" nsresult:

"0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)" location: "JS frame :: chrome ://newsfox

/content/globalfuncs.js :: NFgetProfileDir :: line 138" data: no]

Expansion reinstallation has not helped...

This review is for a previous version of the add-on (1.0.4.1). 

Works fine for me with FirefoxPortable 3.0.5, see https://www.mozdev.org/bugs/show_bug.cgi?id=20421.