Stosh Quartz

i cab no longer cut and paste into events. when i try, my system freezes. i can however, manually enter the information. in both cases, an error notation appears in the lower left hand side of my screen

when i attempt to cut and paste to events, my computer locks up. an error message of sorts appears in the lower left hand corner of the screen. i can manually enter events without problem, but the error message appears wben i do.