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About me
| Name | Andy | 
|---|---|
| Location | Aus | 
| Occupation | it | 
| User since | Feb. 17, 2017 | 
| Number of add-ons developed | 0 add-ons | 
| Average rating of developer's add-ons | Not yet rated | 
My Reviews
Save Images
Rated 5 out of 5 stars
If you disable MultiProcess  and restart FireFox Save Images addon will work again. 
This info was gained from the below support/hack site which goes into much more detail and the risks and how to backup your profile.
ghacks.net/2016/07/22/multi-process-firefox
Check if Multi Processing on by typing 
about:support and check the Multiprocess Windows will be set to True
To enable or disable multi-process Firefox, do the following
Type about:config in the browser's address bar.
Confirm that you will be careful.
Search for browser.tabs.remote.autostart.
Double-click on the preference. (it will then set as False)
Setting the value of browser.tabs.remote.autostart to true enables the multi-process architecture in Firefox, setting it to false disables it.
Restart Firefox and you can check that it False by typing 
about:support (note it is now False)
Test your Save Files and Bingo!
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