nmm crashes when trying to uninstall a mod

Even more thankfully, since Le Presidente took over development the exit crashing with other apps has significantly reduced. Bethesda will release a limited quantity of Fallout 4 G. The crashing usually happens when exiting one of those programs and thankfully the crashing seems to happen after whatever changes you made were saved. NVAC is a simple mod that reduces the chance that your game will crash. Thankfully though it's more annoying than showstopping. The only issues Mod Organizer has is that it is a little more prone to crash when using external apps like FO4Edit, LOOT, and the Creation Kit. Mod Organizer 2 is pretty stable and works well, it's what I use. It's easy to forget this step in a full re-install because you only have to do it once. When adding other animations to run through the engine, you need to pay attention to the mod’s folder structures. Make sure you also followed the ini file instructions to enable mods, this also enables the game to be able to use loose files. If you don’t want a certain animation, then you would simply delete that file from the mod’s contents before running the engine, and it won’t be available.

I suggest either switching to a somewhat older, more stable version of NMM or switching to Mod Organizer 2 which has recently started receiving support again with a new developer. Unfortunately they've also stopped supporting it while they work on a new one from scratch. NMM might fail to open when you have installed a new update and to execute those files. To do this, right-click on the Nexus Mod Manager client and click Run as Administrator. This should fix the problem of the nexus mod manager not working. The latest versions of NMM (from the last 6+ months actually) are really bad about not properly installing and activating mods. First of all, try running the Nexus Mod Manager as an administrator. My standard copy/paste response to this issue:

There are so many problems with NMM failing to properly install or uninstall mods in the last 6+ months that I actually have a standard reply I've saved on a cloud drive for easy copy/paste.

Nmm crashes when trying to uninstall a mod