I play 40 x 40 maps often and we do get some strange things happen after 5 hours real time. Worst case is when a human player's machine has an exception error, his game locks up, times out. He ends up back at windows, game can continue without him although we usually shut it down. Our game logs are big say 6mb to 9mb due to constant warnings.
like ...
warning: Error running lua script: ...mander forged alliance\mods\m28ai\lua\ai\m28navy.lua(7365): access to nonexistent global variable "refCategoryNavalFactory"
stack traceback:
[C]: in function error' ...ata\faforever\gamedata\lua.nx2\lua\system\config.lua(58): in function <...ata\faforever\gamedata\lua.nx2\lua\system\config.lua:57> ...mander forged alliance\mods\m28ai\lua\ai\m28navy.lua(7365): in function ManageSACUsInWaterZone'
...mander forged alliance\mods\m28ai\lua\ai\m28navy.lua(2004): in function <...mander forged alliance\mods\m28ai\lua\ai\m28navy.lua:1605>
and ...
warning: Error running OnAdjacentTo script in Entity ueb3104 at 5df06d08: ...ver\gamedata\lua.nx2\lua\sim\units\structureunit.lua(785): table index is nil
stack traceback:
...ver\gamedata\lua.nx2\lua\sim\units\structureunit.lua(785): in function <...ver\gamedata\lua.nx2\lua\sim\units\structureunit.lua:774>

Also after about 4 hours the game time gets mixed up.
Real time 5hr 14m .... Game time 3m25s

Anyway we are loving the game and it is very rare that we have someone crash.

M28AI run ok on the big map ... I should be able to compare the list of restrictions in the logs.

M28AI is working with a new and different set of restriction. At this stage i am not sure what restriction I had in place that caused the AI to not build. Running a test now on the custom 80 x 15 map to see what units are now available that were restricted before. This will take some time.

#21683677 vault map

Its not the T1 Air restriction.

#21677818

Tried game with No restrictions and M28AI started to build. I think T1 Air restriction might be the cause. It can still build T1 Air plant with the restrictions i had set. Can only build engineers and spy planes.
Doing more testing now.

We gave up on M28AI last night as it failed to do anything after two attempts .... We were doing 4 humans vs 4M28AI on a custom 80 x 15 map that is not in vault.
We loaded four M27AI and it ran fine with good speed. AI built lots of torpedo bombers, battleships and criusers.
We wanted to play against M28AI because it builds a more diverse navy with multiple shipyards and a wider range of ships including Experimental ships.
Mods:
Total Mayhem
All Faction Quatem Gate
M28AI mod

Settings
1250 units
Restrictions .... T1 Air, T3 Air, T4 Air, Paragon, Sat, T3&T4 Long Range Canons, Nukes, T1 Hydrocarbon Perimeter Monitor.

One of our team said he was getting an error saying that M27AI was active and could not be found while I had M28AI only loaded and all four AI were doing nothing. I think that was caused because I had M27AI mod selected in the client with only M28AI in the game.

The boys want to play M28 tonight so I am gonna sort it today.

M28AI commy did not build ... just stood there. UEF and Aeon tested and failed.
Was working fine before latest update.

Update ... I can set a new preset .... seems my old saved presets are lost.

The saved Presets will not load and if you try to create a new Preset it saves the name without any persets listed except mods enabled.