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CloseDeveloper reply by flod
Rated 3 out of 5 stars
This add-on is incompatible with Thunderbird 4 to 6.
This review is for a previous version of the add-on (3.3.1).This add-on is compatible from Thunderbird 2.0a1 to 9.0a1. Please check your firewall, something is preventing Thunderbird from checking the compatibility with AMO (this overrides compatibility values expressed in install.rdf).
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