Sounds like either a master is missing its .esp or that the mod is just missing a texture in general for your black texture issue. For the crash on save problem you're having, it may be that you should use CASM (great mod btw) that incrementally saves instead of having auto save, fast travel save, and wait/sleep save (which have caused crashes). It may also lie under your rig - normally a crash upon a save can occur when you run out of memory. I have 4gb of ram and that is perfect for my game. Should you have the same amount and this persists, I would also recommend you use Iobit Advanced System Care to free up some ram. As well, try getting into FNVEdit - an amazing tool that will allow you to create a merged patch since you have quite a number of mods.