Since I can't find the option to add a support ticket for Sitefinity 3.7, I'll post my problem in the forums.
Hopefully someone can take a look.
I upgraded my project to the latest SP4, since I cannot update my project to SF4.0 because the lack of features for this project.
Now I had a working custom control that shows events in a list and makes use of a different provider.
I'm getting an error now at the following code:
<%# Convert.ToDateTime(Eval("Event_Start")).ToString("dd-MMM-yyyy") %></
The error is:
DataBinding: 'Telerik.Cms.Engine.Data.CmsContentBase' does not contain a property with the name 'Event_Start'.
What could be wrong? Is the key name of this 'Event' property changed in SP4?