FJ Software

Cannot install addon from MPE 1.8.12 (latest version) because "This addob could not be installed because it is not compatible with Thunderbird 68.3.1"

I think that there have already been a number of comments around this problem - any plans to address it in the near future?

According to Thunderbird:

Add-on is not compatible

A file in each add-on indicates the range of Thunderbird versions with which it is compatible. At Thunderbird Add-ons you can find and review the version compatibility information for each add-on. If your installed version of Thunderbird does not fit within the specified range, then installing the add-on or starting Thunderbird will fail or indicate the add-on is not compatible.