Xing Update v1 to v2
From Contao Community Documentation
<< Xing
It was necessary in module, because of the new Theme Manager, to change the concept of the selection of templates.
During update is automatically performed a migration. It is possible that these are clearly not feasible.
Therefore, a manual control is absolutely necessary. Notice the entries in system log!
The migration is looking for existing Xing front-end modules and its associated category,
reads out from the defined template, and carries it into the Xing front-end module.
Is there a Xing front-end module with more than one category, migration is not possible anymore.
After the migration must be controlled, the Xing front-end modules.
Helpful to have the messages in the system log like this:
[24.07.2010 18:45] XING-Module "XING" has been migrated
Here was the Xing front-end module "XING" migrated successfully.
[24.07.2010 18:45] XING-Module "XING Group" could not be migrated
Here was the Xing front-end module "XING Group" are not migrated successfully.
Edit in this case on the "Layout" - "Themes" - "modules", the respective module.
The points "Xing Category" and "Xing Template" should be checked and must save.