We have upgraded from the previous version to the latest and it is all functioning properly except when I try to get to Host >> Portals I get the following:

Error: Portals is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: Invalid URI: The format of the URI could not be determined. ---> System.UriFormatException: Invalid URI: The format of the URI could not be determined. at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) at DotNetNuke.Common.Globals.AddPort(String httpAlias, String originalUrl) at DotNetNuke.Modules.Admin.Portals.Portals.FormatPortalAliases(Int32 PortalID) --- End of inner exception stack trace ---

I have searched everything and did not find any solution. Please help I need to put the site out tomorrow and this part is not functioning after the upgrade. I have included all site aliases but this part gives the error under localhost as well.

Thanks so much

Was getting the same error after creating a couple new portals. The problem in my case was a leading space before the portal alias name. Once I corrected that, all works fine.
 
Would be nice if that validated for illegal characters when adding aliases ... validates for duplicate records.

Kelly