When xreg is previously used on a computer spoonreg in combination with /allusers results in the following error:

spoonreg /allusers "\\...\\ZAV\KruidvatFoto\KruidvatFoto.exe"
An error occurred while processing the command: An error occurred while installing the Spoon Virtual Desktop service.

spoonreg without the allusers works as suspected.

What to do?