Hello, I am having a bit of a problem in Oblivion. I am making a project (a mod) now the problem is, is that the creatures(skeletons) that are in a single cell (an ayleid ruin) disappeared, their there in Construction Set, but not in-game, I tried using resetinterior, didn't work.

any Suggestions?

Hard to tell without looking at it. I started a mod recently named YAKM (Yet Another Kvatch Mod) and I've deleted and restarted it several times. One test I went to the mountain west of the default Kvatch, and my new section just wasn't there. Reloaded an earlier save game before I had traveled to that area, still no West Kvatch. Deleted all saves and restarted with a new character, still no West Kvatch. Present and accounted for in the CS, Missing In Action in the game. Then I opened the launcher and checked the Data Files - YAKM.esp was not activated!

Apparently it wasn't activated, it's saying it's not a valid oblivion plugin or master file.......