Move from PBX Manager to MTE

Hi Guys

I was in the process of setting up a server to test the PBX Manager MTE and I accidently installled the standard PBX Manger GUI webmin module, I have tried removing this via webmin module configuration and installing the MTE version but it keeps throwing the following error at me.

"You are installing PBX Manager MTE on a mashine with PBX Manager"

Anybody have an idea as to how i can resolve this??

Many Thanks

Ben