When you try to display the "Attached Profiles" dialog from an option settings sub-page Picard prints a "KeyError" exception to the terminal but does not record the exception in the log.

Steps to reproduce:

1. Open "Options..."
2. Select the "Option Profiles" options page.
3. Create a new profile and enable the "Advanced" settings for the profile.
4. Select the "Advanced" > "Network" options page.
5. Click the "Attached Profiles" button.  The dialog is not displayed and the exception is written to the terminal.