Race Problems

[Shadowstrike2]

Hello, I am new to moding and thus figuring out problems like this. I'm sure this has already been discussed here and I'm sorry if I have to make anyone repeat themselves however I've already thought of every possible thing and have done what people have recommended in their readme but it still hasn't worked. I'm having trouble with some race mods, in fact ever race mod I've downloaded. There are usually two problems and one turns into the other. The first problem is I get the 'no head and purple skin' problem. The second is the mod works the first time I load up Oblivion but when I come back after saving and exiting the game problem one happens, or the body and all armor disappear completely but the game acts like the character is still there, and I have no idea how or why that is happening. There are also some problems with the race mods not showing up but I can deal with those later. For now I just want to figure out how the current problem is being caused.