Something wrong with SRB2 tbe!

Whenever I beat egg carrier 2 it says,Eternal game map 21 not found!
Can someone help?

Redownload it.

I did that 10 times 3 hours ago.
It doesnt help.

All that means is that it's trying to jump to a map that doesn't exist. Because level packs have all the levels in one WAD (unless they're weird), all this does is indicate that the level pack simply isn't finished yet. Though, it might also mean that the author is silly and doesn't know how to configure their level headers properly. It's not an error on your end, so don't worry about it.

The level select may say the map is in there because the map headers are in, but no map.

This belongs in the TBE message boards, where you tell him the problems.