Hi,
I noticed that when we point a report to a different data source on Valentina Studio Pro (v. 8.0.2) and some old fields (which are not defined in the new data source) are referenced in the grouping or sorting (and even in print_if expressions) this makes Valentina Studio Pro crash when trying to generate the Report Preview.
I'm on Mac OS X El Capitan (10.11.6 (15G17023))