@duffystavern
Glad you're making progress. Possible corruption of some of your files? Check that they are present in ...\XXX\USSEssexCVs_SCB125\3do\Ships\USSHancockCV19_1968\ folder (where XXX = 'MODS' or '#DBW' or '#UP#') and that deckL2048.mat is 724 bytes and deckL2048.tga is 16385 kB.
I tried to replicate your error by deactivating deckL- files and got a similar - but not exact - readout as you. Your error seems to involve TTexture20 which I couldn't find in my error log. Is Ttexture20 a Java class file?
Check that your western Essex carriers have a clean installation and test that one or two carriers are working well. You don't have to change any of western Java class files now that new Hancock is a replacement and not an addition.
Temporarily switch off Rawners' Essex crew if you have them, or double-check that the two Hier.him files are compatible.
If you haven't already, it would be useful to delete, re-download and re-install the new Hancock. Keep going, it's worth it.
@Bravo/anyone
I like your shot but would prefer better aircraft parking; unavoidable at present though. A couple of weeks ago I tried moving parking hooks for Hancock but was unsuccessful*. It would be good to have parking off the landing area so that we could populate and actively fly the deck at the same time. Could anyone help here?
*(Moved hooks horizontally in Blender, exported only parking hooks to GMax, exported to .msh file, copied their XYZ positions and replaced them in Hull1.msh and Hull3.msh as appropriate).