hey Isaac, Jay here. I've had that problem as well with SFC1, EAW and OP. what I found out is;
1. check to be sure the shiplist geometry is correct.
2. re-check to be sure the shiplist geometry is correct. think like a carpenter. measure twice, cut once.
3. some of the models use hi-resolution textures. 512, 1024 and in the case of WZ45, they're bigger. check to see if your computer's graphics card is able to run the graphics. I am using a F-CA model by Khaliban with hi-res textures as a F-CB(Heavy Command Cruiser), F-CB+(Enhanced version), F-CBR(Refitted version) and F-CBV(Carrier version).
my GEOMETRY reads;
assets/models/fcb/fcb.mod
assets/models/fcb+/fcb+.mod
assets/models/fcbr/fcbr.mod
assets/models/fcbv/fcbv.mod
4. if you installed the models, updated the ASSET shiplist and the META-ASSET shiplist AND THEN ran the patch...you have to re-do your work with both shiplists. remember, SFC-CE, EAW and OP have TWO shiplists and fighterlist files. and the information has to be IDENTICAL with both. wrong in one, wrong with two.
5. while you can rename the .mod file, you can not rename the texture files. I'm not sure why but I tried and it never works. so be sure that the texture files have their original names.
6. ALWAYS, ALWAYS, ALWAYS make a copy of the original shiplist and original fighterlist files. I have a folder specifically for them named ORIGINAL LISTS, with a sub-folder named ORIGINAL META-LISTS. I even rename the original shiplist files as "ORIGINALshiplist".
well I hope this helps.