We have been able to create sites based on a custom template. Suddenly some users get the following errors:
From Meeting Invitation:
Your attempt to create a meeting workspace or link to an existing one can’t be completed.
Reason: The template you have chosen is invalid or cannot be found.
From Site Actions – Create a Site:
The template you have chosen is invalid or cannot be found.
Troubleshoot issues with Windows SharePoint Services.
I've tried to create the site and I don't have this issue.
What could possibly be wrong?