The Connection Wizard crashes after clicking the "Finish" button at the end of the configuration process.
After entering settings and clicking "Next" through the Wizard, I reach a dialogue box that says "Congratulations. The connection to '<hostname>' will be saved as '<name>'. Upon clicking the "Finish" button, I get a dialogue box saying that "Connection Wizard has closed unexpectedly." I attached the "Problem Details" as a text file.
This crash occurs whether or not I chose the "Advanced Configuration" option. I removed my ~/.nx directory and retried, but the crash still occurred.
The newly-created session is in fact available when I open the OpenNX client application, so I guess the crash doesn't affect the functionality.
May be a duplicate of bug 61 from September 2012: https://sourceforge.net/p/opennx/bugs/61/