Step #2 in the I Heart Vanilla list
An attempt to fix the many issues present in Bethesda's original Official Plugins. Includes fixes for all of the Official Plugins, and offers merged and compatibility options as well.
Download both packages. Install the data files from the main file (Icons, Meshes, Sound, Textures), and the 'UMOPP Merged' plugin from the 'Merged and Compatibility' file.
Unofficial Morrowind Official Plugins Patched.ESP