I was recently introduced to PuttyCM and am hooked to it till now.
Just a while ago while I was making some changes to the config and all of a sudden I could not access the software. Unexpected Error “object reference not set to an instance of an object” shows up and I can’t seem to access the software anymore.
Then I remembered the last I changed was the “Show Tray icon” option to disabled.
I re-enabled the option and…
Bingo.. I can access the program again.
Hope this will help you too. 🙂