Re: Uh Oh. This isn't good . no idea why. sorry pal (error message after CTD)
The log shows a good number of trait descriptions missing, but that's not a crash problem - it will just result in coded default text display. Between the last error line and the crash message is a 4 minutes gap, which means there really isn't any way to say what the problem might be.
This isn't a general issue as such, this will be mod specific - hence I would suggest to post in the mod's thread to get help.
PS: the message you quote is taken from my Bare Geomod basic modding set up it's just a different wording for the default "medieval 2 has encountered..." message.