I made a quick fix Version 1.4 of Proportions, which can be used to upgrade existing games.
There is a problem with Proportions 1.3 running on SE IV Gold 1.6, in that the infantry defense modifiers can cause unintended stalemates in ground combat. These modifiers have been removed in Proportions 1.4, and are the only change, so existing games running 1.3 should be able to switch to 1.4 without causing any problems or balance issues.
I mean to release a Proportions 1.5 soon (this weekend, I hope), which will also change a number of other things, which are really changes to the balance and other aspects of the mod, rather than fixes. It may be possible to upgrade existing games from earlier Versions to 1.5, but it will change some abilities. Hence 1.4, to fix the problem without changing the game balance and abilities of some things.
Proportions 1.4 is available at PBW
HERE.
PvK