Presets Browser is not opening

When I try to add a track, pressing the “browse” button in the “add instrument” dialog box no longer opens the Presets Browser. It happens for all types of tracks. Media Bay seems to be fine.
The Track Preset field in the inspector DOES open the browser.
This is the second quirky thing this week. Coincidence?
Cubase 5 Studio 5.2.2
Appreciate any thoughts on this.

phil

Time to trash Prefs, I’m thinking.

Your thinking, once again, was correct. Everything is good now. Thanks.