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Rated 4 out of 5 stars
I came here, because "Add-on Compatibility Reporter (ACR)" does not offer the most useful feature anymore, but I needed a way to use "old" addons because the Mozilla-Crew decided to turn their back on their users and really annoy them every release with some new burden.
-1 Star, because the addon installs itself under "checkcompatability", while the addon-webpage calls it "Disable Add-on Compatibility Checks" and it took me quite some time to find this addon in the addon-manager.