Can't use find features

[kinook]

When clicking on the Find window, Find accessible object, etc. buttons of the QM toolbar, QM beeps, displays the error 'Error (RT) in dialog: exception. line: r=DialogBoxIndirectParam(_hinst dt hwndowner &DefDialogProc d), and becomes non-responsive (I have to exit via the system tray icon).

I did install v2.2.1.2 last week, but I uninstalled and reinstalled 2.2.0 and the problem persist. What happened and how do I fix it? Thanks.