Trouble with SSH components on Linux

I have just installed pipeline pilot server 6.1.5 on CentOS 4.5. I am connecting to it via the PLP client running on Windows XP via VMWare. I was able to the get ODBC components working properly. However, the SSH components are not working properly and I am stumped as to why that is. I keep getting the error message back from the client that the key file does not contain an applicable key. However, if I ssh from the linux server to the destination server using the same key file then I am able to connect just fine. Is there something more that I need to do to get SSH working on a new PLP server install?

Thanks.
-Don