Slider MouseUp event not firing

2013 R3 OS X Cocoa, Slider MouseUp event not firing. Any ideas? MouseDown event seems to work as advertised.

Bart

Can’t get MouseUp to fire anywhere even in the primary window of a newly created app, cocoa or carbon. Is this a known problem I just never noticed before?

Did you remember to return true in mouseDown?

Thanks Karen, that was it. I forgot to return true in the MouseDown event. I think I need a vacation! :0