Thank you for reporting this issue.
The issue is logged in our system and forwarded for review. You can monitor the status of the bugs in our issue tracking system PITS
. The issue ID is 5928
In order to avoid the error I suggest removing the predefined value or delete the field.
I updated your Telerik points.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items