Uninstall the agent and install it locally directly in the client server.
Copy source from the be server on \programfiles\symantec\\be\agents\ select x86 or x64 copy locally and install
try do a local installation.
copy the source in the client server from BE server in c:\programfiles\symantec\backupexec\Agents\Rawsx86 or x64.
Install it and specify the beserver for the rattachment