dumbkoala

The very first thing I would advise you to do is check archive invalidation. Is it enabled for you? The second thing I would check is the game's ini files themselves. Incorrectly configured ini may well cause similar problems.

1) 2) BA2 archive limit ??? Disabling esp may not help in this case. As far as I know, the game will still count all ba2 located in the "Data" folder. That is, even if you haven’t activated the plugin, but its ba2 archives are located in the "Data" folder, the game still won’t start. Try temporarily deleting a couple of ba2 archives and starting the game. If the launch goes without problems, you need to exit the game and return the deleted ba2 back. After, install BSA Browser. Using this utility, extract several of the smallest ba2 archives directly. Don't forget to delete the ba2 archives you extracted. 3) .esp limit ??? You can try to get around this type of limitation by merge plugins. But this workaround can be problematic even because of the same ba2 archives that the merged plugins can use. The merged esp will not recognize them and you will either have to unpack ba2 using the method indicated above, or using the more advanced utility "Archive2" learn how to merge the ba2 themselves. An easier way to get around the limitation is to set the esl flag on some of the esp's you use. You can do this automatically using Ruddy88 ESLify. CTD on the start screen can also be caused by the absence of any master file required for the operation of some mod you are using. Also, the game may crash on the start screen if you did not run it as an administrator. But I doubt that these reasons apply in your case. ================= added: And yes, there is definitely more than one problem. At the beginning of the crashlog it is indicated that the ba2 limit has been exceeded. Two plugins are mentioned later. RB_ProtonAxe (ProtonicAxeStaffShort.nif problem) and cccrsfo4001-pipcoa.esl. You can try disabling at least the first of them before the next time you start the game. And don't forget to make changes to Buffout4.toml, this is very important. =)