Web Update function

Hello guys,
im facing some problems with the Web Update function.

I did all steps correctly as in the Video Tut.

When i open the Application i get a Prompt that a new version is available, when i click on Update it is downloading the files and after this the workbook opens.
The Problem now is that the updated Workbook doesnt show any new changes.
Also after i close the Workbook i get the Prompt Update Available again.

How can i fix this?