Bismarck-Tirpitz multiskin problem

Erm . . . not sure i understand that last statement, but never mind.

If you're in testing mode . . . i've been getting a ctd lately at about 13:50 in the Graf Zeppelin mission, and don't know why. It's only started since i tried adding the slower ships mod, but i removed the mod and it's still doing it. Always shows as a ntdll.dll error.

I'm on GWX 2.1 with the AOTD bugfix,
GWX 3 community units,
A Green Atlantic 8k
GWX lite harbor traffic
VonDos's armed liners
Q-ship mod
RN CV Glorious
Multiskin Bismark-Tirpitz,
Torpedo damage Final v2 .

That's all my enabled mods.
I've got GWX 3 on the other hard drive but the old comp seems to struggle more, might be the improved graphics in GWX 3, so i tend to play 2.1.

As you know i had problems . . and found anomalies i didn't like, with the sim files on the slower ships (thompsons) mod and and the val files with the lifeboats & rowers v4, so i disabled them cos they didn't agree with the Tirpitz ( no forward motion, no wake etc).
Then i disabled the multiskin, the Glorious and Torpedo Damage final v2, and reloaded them so that the ships went in before the Torpedo damage mod.
So it would imprint damage on the current skins.
I don't actually think that the Torpedo damage mod is anything to do with it, but just in case. . .
Problems with shipping i've found usually happens when the ship first enters the mission, or when it comes under fire, neither of which is the case here.

It was all working fine with all mods before the glorious, multiskin, slower ships and lifeboats mods were added. Last two are disabled, previous two seem to work ok in the Testing Tirpitz mission..

Sorry to waffle on, just giving you my set up and mods configuration.
And thanks for any help you can give, i'm no SH3 or computer expert, nor do i want to be lol.
It's nice when the game works tho