Not a major issue, but after installing CTR_v1.7.8.2019.02.26.xpi, the extension information under "Add-ons>More" shows "Classic Theme Restorer 1.7.8.2019.02.10".
The problem appears to be that install.rdf still shows "1.7.8.2019.02.10</em:version>" on the eighth line of its code.
Not a major issue, but after installing CTR_v1.7.8.2019.02.26.xpi, the extension information under "Add-ons>More" shows "Classic Theme Restorer 1.7.8.2019.02.10". The problem appears to be that install.rdf still shows "1.7.8.2019.02.10</em:version>" on the eighth line of its code.