Unable to reproduce this, so just reporting for the record:
I wanted to add a backup folder in options 2.4.6, using the dialogue box (was previously making backups in same folder as the file)
Noticed there was no create folder button
Navigated to my folder, noticed [OK] was greyed out
At this stage I either double clicked the folder, or maybe the greyed out OK button (I know: why?)
IQ crashed with error details below.
On restart, everything fine: add folder dialogue was complete and all worked fine.
Problem signature:
Problem Event Name: APPCRASH
Application Name: InfoQube.exe
Application Version: 0.9.0.85
Application Timestamp: 582570d2
Fault Module Name: StackHash_d9d8