transactional replication-snapshot agent failure ... can anyone help me out
Looks like you timed out.
Add this to your snapshot agent job step:
-QueryTimeOut 3600
The default is 1800 seconds which is 30 minutes.  Try giving it 1 hour or more.
http://msdn.microsoft.com/en-us/library/ms146939.aspx
http://msdn.microsoft.com/en-us/library/ms151326.aspx