I just started a game with v26 and got this popup after discovering shelter building;
Error in BeginPlayerTurn event handler <bound method ANewDawn Popups.on BeginPlayerTurn of <ANewSawnPopups.ANewDawnPopups instance 0x17830D28>>
ough, it's sounds like one of my last modif that didn't worked. It's on the popup that gives the information about the Ctrl+Alt+O menu. I wasn't able to test it (the popup never shows again in my games.
I'll check what's going on.
EDIT : Fixed int SVN (3555).
The Error has no link with shelter building. It will reproduce every 10 turns.
Workaround is to set HasRunAND = True in User Settings\ROMSettings.ini
/turn but my treasury is bigger and bigger every turn this is weird. MAybe I am not a good mathematician but something is wrong 
/turn (so it can grow to 400 city size
)
you hoarders that'll teach ya. 
.... shouldn't call my civilization Enron .... I will adopt 

, I can fix, I think. 