Problem creating SharePoint sites from PS

[jeff]

When I create a SharePoint site from PS, the site is created however I
get an error "failed to add custom roles for Project Server".
Basically the site gets created, but none of the custom Project
specific SharePoint groups (e.g., "Project Managers", etc) get created
(and therefore none of the project resources are added). I used
pscomplus to set the STSAdmin identity, and it has local admin rights.

Same thing happens if I enable auto-generation of SP sites when
publishing ent. projects. The site gets created, but no groups or
resources are added.

The only site that did configure correctly with all the groups and
users was the default document site.

--jeff