standalone sql server on wfc cluster cannot have files on shared disk locations

Hi,

Im trying to install a new Sql Server which will be added to an availability groups. Its meant to be standalone ( ie not part of FCI).

I have enabled cluster services and added the server to the existing cluster but when I try and install I get this validation error on the install screen.

The directory d:\xxxxxxxxx\xxxxx  is not a valid path.  Standalone sql server on wfc cluster cannot have files on shared disk locations

Any ideas where i have gone wrong here?