I’m encountering the “This took forever” Screen while working with DFFS on SharePoint 2013 with a custom theme from Bindtuning.
The Console does not show any precise error output.
Do you have any experience in encountering problems with custom themes ?
Sorry for the late reply.
We got this error fixed by the theme producer.
Problem was a jQuery Conflict. They encapsulated their functions in their own variable and things are working now.