Backup of Core Switch HP 2530 issue

Hoping someone has seen this before. We are running an older version of Cattools(3.11) and it has been working well up until recently. Running the device.backup.running.config, it connects to one of our core switches (HP 2530) and will complete the backup.

However, when the backup is completed and I attempt to telnet into the switch, I get a connection with just a blinking cursor. No prompts for username or password. If I start another session with the previous session still open, I actually get a normal connection window with the correct prompts. I am able to kill any telnet connections and still have problems with the initial telnet connection.

Any insight would be appreciated.