Thunderbird won't "Compose" new or reply message

[Andy Green]

Douglas Phillipson wrote:

> An error occurred while creating a message compose window. Please check
> your installation.
> 
> I've never seen this problem before.  All other popups in Thundirbird

Hm I have been seeing this today, after the Thunderbird security update.

It seems it will not create a second reply window if the first is still 
unsent.  In addition it spawned an empty window set to 10x10 pixels or 
somesuch in the top left at one point, but has not crashed FWIW.

-Andy