SureAI

The title pretty much sums it up. I fought the first Mud Elemental, and after I leave the ruin I can walk around for a few seconds before the game crashes on me. I am running a few mods, but most of them are confirmed on the compatible modlist. To be safe, I tried disabling all of them and I still get a CTD. Any idea why this is happening? Would love to be able to play this game, I've been looking forward to it for a long time now.

EDIT: Running an ENB as well, which I tried disabling, but to no avail. I suppose the only other thing worth noting is that I did copy a fair amount of textures and meshes from my backed-up Skryim install to pretty the game up. In my experience, though, that shouldn't be causing any crashes, especially considering that the files are directly from my Skyrim installation, which runs perfectly fine and is heavily modded.

Could be a cache problem.
Make a manual save after you killed the mud elemental. Delete all your autosaves (or move them away). Then restart your PC. Start Enderal. Load the manual save. See what happens.
If it still crashes, then something is wrong with your installation.

Enderal is not Skyrim.
At the beginning at the installation you clicked on a red warning sign that warned you about the utilization of Mods/ENBs.

I'll recommend to uninstall Enderal. Restore Skyrim. Verify Skyrim game files in Steam. Install Enderal without Mods. Load your save.