Stephen Vaughan

Ye error is wajah se aa rahi hai ke button ya command ek aise namespace ko refer kar raha hai jo ab exist nahi karta. Toplevel window ya uske saath linked procedure delete ho chuki hai. Error window close nahi ho rahi kyun ke uska "OK" button bhi usi missing command se linked ho sakta hai. Solution: catch use karo ya error window ko destroy command se manually band karo.