I am having the same issue. VEP6 just keeps crashing on start after updating to Sierra.
tried to codesign the app, but got this:
"Oscars-Mac-Pro:~ Oscar$ sudo codesign -f -s - /Applications/Vienna\ Ensemble\ Pro/Vienna\ Ensemble\ Pro\ Server.app/Contents/MacOS/Vienna\ Ensemble\ Pro --deep
/Applications/Vienna Ensemble Pro/Vienna Ensemble Pro Server.app/Contents/MacOS/Vienna Ensemble Pro: replacing existing signature
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
/Applications/Vienna Ensemble Pro/Vienna Ensemble Pro Server.app/Contents/MacOS/Vienna Ensemble Pro: the codesign_allocate helper tool cannot be found or used
In subcomponent: /Applications/Vienna Ensemble Pro/Vienna Ensemble Pro Server.app/Contents/PlugIns/bearer/libqcorewlanbearer.dylib"
@dbudde said:
If you reinstall VE Pro after upgrading to macOS Sierra (public beta) then you will get a crash due to code signing errors when running VE Pro Server (either 32- or 64-bit). This is due to a more strict code signing process that needs to be addressed by developers.
This can be fixed by codesigning the apps locally. You can do this by executing the following terminal commands:
sudo codesign -f -s - /Applications/Vienna\ Ensemble\ Pro/Vienna\ Ensemble\ Pro\ Server.app/Contents/MacOS/Vienna\ Ensemble\ Pro
sudo codesign -f -s - /Applications/Vienna\ Ensemble\ Pro/Vienna\ Ensemble\ Pro\ Server\ \(64-bit\).app/Contents/MacOS/Vienna\ Ensemble\ Pro