Thunderbird upgrade - Enigmail breaks encryption / signing completely

[Petr Hejl]

Hello,

sorry if this has already been discussed, I only registered to this 
mailing list now.

After the last Thunderbird upgrade it is no longer possible to encrypt / 
sign messages with Enigmail enabled. Enigmail doesn't even ask for a 
password and fails with "encryption command failed" (even though I 
didn't want to encrypt anything, just sign).

To make things even more weird, it is also no longer possible to use 
Thunderbird native security functions (using trusted CA signed S/MIME 
keys) as long as Enigmail is enabled. I have to disable Enigmail 
entirely in order to be able to sign my messages this way.

After searching the web I learned that other people are also affected by 
this issue but found no solution. Should I submit an official bug report?

Thanks
Petr