After installing 7.5.1 rpm VStudio will not start producing a segmentation fault. Uninstalling and downgrading to 7.5 makes VStudio usable again.
Fedora release 26 (Twenty Six)
Linux 4.13.5-200.fc26.x86_64
Valentina Studio 7.5.1 x86 RPM
http://www.valentina-db.com/download/release/lin_64/vstudio_x64_7_lin.rpm