Rated 5 out of 5 stars

At this time my only issue with this updated version of Extension List Dumper is the Read-Only attribute that is applied to saved files. This prevents overwriting a previously saved list and generates a JavaScript Application error:

Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIFileOutputStream.init]

What the extension should do is either not set the Read-Only attribute, ask for your permission to overwrite the existing file or give you another opportunity to change the output file name. With the latter defeating the purpose of having a predefined file name configured in the settings. I may tweak the extension to see if I can stop the attribute from being applied.

Ordinarily I would have removed a star due to the error handling. But, because this extension dumper does NOT include a wacky flower background, which all by itself adds one star, the net result is even. ;)

This review is for a previous version of the add-on (1.0). 

Thank you for reporting. The saved file with the new version 1.0.1 is read and write.