On the upgrade to 4.1.260 some “strange” things happen in Windows Installer:
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If the user choose Change/Remove the application, the left side on the setup window does not show the components neither
to “Update” nor to “Change”. The user could not choose what to update or change in the installation… 
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The file vpsupd.exe (update file) cannot be applied to version 4.1.260: Error: 0x00000008 (only works with previous version… 
What´s happening Vlk?