I created a workflow for a customer using the Create Site Collection action with a custom site template. I'm using Nintex 2013 WorkFlow. It's been working great. However, the customer recently upgraded to SharePoint 2013 SP1, and also upgraded to Nintex 3.0.8.
Since then, we are getting a "List does not exist" error when creating the site collection, using the same custom site template. Core templates seem to be working well. Some of my research turned up a similar problem, when upgrading SharePoint 2007 to SP1. In that case, the entire site had to be recreated and then saved as a template - pre-SP1 sites wouldn't work.
Any thoughts or feedback would be appreciated!