Getting the following error message in the SharePoint 2010 ULS Logs when some custom code attempts to invoke SPUtility.GetPrincipalsInGroup()
:
SPClaimsAuthRoleProvider.GetUsersInRole(string roleName) encountered a role '0(.s|true' with unsupported original issuer type 'SecurityTokenService'.
Any ideas what would cause this? This is a Claims-Based-Authentication site and this code works fine on another server with Claims-Based-Authentication configured.