When you click on what? From you message it appears as though Windows Explorer is crashing. What service pack are you using? I recently read that SP 3 may solve this problem.
yesterday i was removed some un used softwares ( i think that time some dlls missing)after that when i double click on my computer/ my network area, any folder, any file in desktop it was not opend and showing error mesage...i am using xp with service pack 2