Unable to close Preferences

After modifying the 7z configuration in the preferences, I found myself stuck in that mode. No dialogs or other listers were open. I generated some crash logs, restarted Opus, and the issue was resolved.

I am sending the crash logs.

Thanks! Looks like it happens if you use the titlebar OK/Cancel buttons for Preferences while the Prefs window is showing a dialog (e.g. to configure 7z). After that, the Prefs window won't work until Opus is restarted.

We'll change it so it checks for that and brings Prefs to the front instead in that situation.