I should have asked this a long time ago, but keep forgetting.
I think this started with calibre 6.0, but I'm not sure.
My calibre is set to start the server automatically when calibre launches. Now, every time I run calibre from source, I get this error:
Code:
calibre, version 6.22.0
ERROR: Failed to start Content server: Could not start the Content server. Error:
Cannot use Qt in non GUI thread
I tried to launch the server manually after initialization but it didn't work either.