10:16:23.119 [system.io] [warning] open: data/models_strat/textures/middle_eastern_sultan_novgorod.tga is missing
10:16:23.126 [data.invalid] [error] Insufficient video memory to load requested texture set.
That appears to be an issue with the sub mod, that texture is missing, it's certainly not in the Stainless Steel installation.
To fix it proceed as follows:
- open data\descr_model_strat.txt
- use the 'find' function to locate the entry for middle_eastern_sultan_novgorod.tga
- replace the file name entry with one of the following:
middle_eastern_sultan_kwarezm.tga
middle_eastern_sultan_egypt.tga
middle_eastern_sultan_turks.tga
middle_eastern_sultan_moors.tga
middle_eastern_sultan_timurids.tga
- alternatively have a look in the data\models_strat\textures directory to see if there is perhaps a typo in the file name and then adjust the entry in descr_model_strat (or edit the file name)