Thanks. Applied fix and got through that turn ... afraid I hit another one:

[15:50:28][22704]----------GAMEPHASE END START
[15:50:28][22704]Phase end: central_powers
[15:50:28][22704]-----------GAMEPHASE END END
[15:50:28][22704]=======================DIPLO SEQUENCE START ...

Thanks so much for the time and effort in creating this mod -- I am finding it fascinating so far!

Crashing scenario:
v 5.35, single player, playing as CP, balanced, during AI turn

last few lines of .log file:
[13:34:41][16120]--------------FLEET REPORT---------------------------------
[13:34:41 ...