[Wulfmann]

Since I had this problem with a heavily modded SH3 I made a new install on another PC and ran everything without a hitch. I only added the graphic and sound updates of RUB, my RND file and the Zones, Sonar and DC fixes. I added the CCLass DC from serg and modded the trawlers to have DCs from the beginning. Both of those have been in most of my missions without any trouble.
So I copied the entire Data folder and moved it to the gaming PC and have run dozens of perfect missions from many bases. It was doing great in 1943 until Dec and that, of course, is the only way to get to 1944. So even on the big PC no trouble at all until with anything until Dec 1943 when seeing a DD, any DD caused a CTD. I ran the Dec mis by saving as I went then by passing anything with a DD to see if it continued in Jan 44 and it did again CTD when I turned the peri on a DD after looking at the many lead ships ina convoy and turning 180 to see the lead escort, usually a DD or DE for Jan 1944.

The only mods in the sea file folder are the shp.tga from RUB. Since these have caused no problem before Dec 43 I don’t see how that could be it but will put the stock back in as a test.
The only roster file mods are moving the C3 class cargo to start at the beginning and the mentioned above. I even left out Jason’s Norwegian and Netherland ships just so I would have less to even consider (although these would never have been a problem, I wanted bare minimum to test and search for CTD culprits. My round file uses some of Jason’s convoys but they are then modded to my taste and changing the Norway and Neth ship nationalities
The TNormal Tex folder only has the RUB stuff, nothing else.
I have added sound files and the Das Boot crew graphics and I switched the stock colored marker to the RUB black (Left the colored tail, works well!!) All the above would have caused a problem at other times as they have been there constantly from day one and work without a hitch. Something changes in December, 1943 that causes the DDs (or all escorts??) to facilitate a CTD.
Berry, while I see the point I believe the graphics would be loaded before this point. In other games when the item loads or become known in the situation actively it would CTD. With this happening as the objects is already there and only when I look at it; CTD, that is very much a new one to me
At least we know this much and now can have the fun of finding the little bugger!!!
Wulfmann