An application error (subtitle-edit-4.0.10)

[sudeshsrt]

                                                                                               **An application error occurred 
                                                                                                          subtitle-edit-4.0.10**

subtitle-edit is best app. all time
but some error occurred every time

'Windows Forms Thread Exception'

Error Message:
Object reference not set to an instance of an object.

Please help me
For solve my problem

[sudeshsrt]