I noticed a problem with the instructions you offer in the text file. I am not that knowlegeable of registry stuff but your instructions point to

HKEY_CLASSES_ROOT\Installer\Features\7040110900063 D11C8EF10054038389C\WISPFiles
HKEY_CLASSES_ROOT\Installer\Features\7040110900063 D11C8EF10054038389C\WISPHidden

and in my registry, they are

HKEY_CLASSES_ROOT\Installer\Features\9040110900063 D11C8EF10054038389C\WISPFiles
HKEY_CLASSES_ROOT\Installer\Features\9040110900063 D11C8EF10054038389C\WISPHidden

also in

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer\UserData\S-1-5-18\Products\7040110900063D11C8EF10054038389C\Featu res\WISPFiles
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer\UserData\S-1-5-18\Products\7040110900063D11C8EF10054038389C\Featu res\WISPHidden

it appears as

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer\UserData\S-1-5-18\Products\9040110900063D11C8EF10054038389C\Featu res\WISPFiles
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer\UserData\S-1-5-18\Products\9040110900063D11C8EF10054038389C\Featu res\WISPHidden

The 7's should be 9's at the start of the folder