Id Mismatch on New Tekkit Lite Server

[chromebookbob]

I have started a tekkit lite server (0.6.5) in linux  and when trying to connect from another computer I get:

Forge mod loader has found world id mismatches

world:(etc.) VanillaGlass

world:(etc.)VanillaIce

 

 

I have tried multiple versions of the server and client but to no avail. Any help? Is there a method to creating a new server to stop this? Help ASAP please.

Thanks in advance