You can't mine alt-coins with block erupters, its only for Sha-256.
Gee, not even Namecoin, Peercoin, Devcoin, Terracoin, Bytecoin, Ixcoin, I0coin, or Freicoin? Because they all use SHA-256.
-R8
Really? Didn't know it can't mine Sha-256 alt. I believe its because of the software problem?