Lately, some modders seem to have problems with hair having holes after using SSE Nif Optimizer. No matter of this beeing a bug of the Nif Optimizer or a bug of the .nif file - there is a solution: The problem is, that NiSkinPartition blocks in a nif must not be used more than once. This occurs often, when mods for oldrim were badly done: especially as the hair and the hairline can use the same mesh. To fix this, simply duplicate every NiSkinPartition block affected using NifSkope, BEFORE ever using Nif Optimizer. Otherwise the meshes are corrupted. See the attachment for an example.
