Nether bugged in Tekkit?

[SumYungGui]

I set up a Tekkit server. Whenever anyone goes into the nether if they die when they respawn it's in some completely random area of the nether, kilometers away from the entrance. I checked it out in admin mode and when this happens everything goes screwy. Portals *IN* the nether lead *TO* the nether at that same spawn point from above so there is no way to get out, portals in the overworld lead to a completely empty world with just a portal and a small obsidian platform. It basically breaks the nether.

Now I can fix this with a server restart which makes everything work all the way up until someone dies in the nether, then it's all broken again in the exact same way.

Help?