cant install agent

Hi all,

i have upgradet my old 12.5 BE Server to BE2010. Lets called this server BE-2

We have an other BE2010 in an other location. Let's called this one BE-1

So i run a backup job on BE-1to backup the the BE-2 catalogs.

Now aftret  I have update 12.5 to 2010 i can't run this job because there is no agnettrust anymore between both servers.

So i tried to install the agent on the new BE-2 server remotly from the BE -1 server but i can't. The error message says me that an old agent should be removed first. But i can't find an old agent only the new one v13 on BE-2 

Any idea hove i can solve this problem?

I can't find a remove tool as well to remove the agnet and reinstall it again.

Hope you can gelp me