great Rated 5 out of 5 stars

Very good, glad to have this functionality and back... and even better I finally found a addon that actually tries to show you the total file size of a file before you save it..

WHY IN THE FEK DO THOSE IDIOTS AT MOZILLA NOT DO THIS.

Anyway I have a problem.. when I clikc on a download link, it opens a new tab.. it closes it, but some reason I'm getting 2 save dialogs show up for just 1 click on a download link...

some way to fix this.. not sure if its caused by some other plugin.. tabmixplus? how to fix or can you fix it

This review is for a previous version of the add-on (1.5.1). 

Can't reproduce.
Some special Tab Mix Plus settings (or other extensions)?
And what you mean? Click on some "downloadable" link -> Opening ... dialog -> check Save File radiobutton -> Ok or you use "Save link as… (Ctrl+S)" button on Link properties dialog?

Anyway please provide detailed description here:
https://github.com/Infocatcher/Link_Properties_Plus/issues
Information from about:support page and exported Tab Mix Plus settings may help me to fix this.