xDiffPatcher Problem

[Jedzkie 58]

i always get this problem when diffing

 

"Exception Source:      xDiffPatcher

Exception Type:        System.NullReferenceException

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

Exception Target Site: CheckInput

 

   at xDiffPatcher.DiffInput.CheckInput(String value, DiffInput input)

   at xDiffPatcher.DiffFile.ApplyPatch(DiffPatch patch, Byte[]& buf, BinaryReader r)

   at xDiffPatcher.DiffFile.Patch(String inputFile, String fileName)

   at xDiffPatcher.frmMain.btnSave_Click(Object sender, EventArgs e)

   at System.Windows.Forms.Control.OnClick(EventArgs"

 

Please help!

 

My Client : 2013-03-20eRagexe