I had the Problem that with qt 5 the euRun.exe was complaining about:

QObject::connect: Cannot queue arguments of type 'QVector<int>'
(Make sure 'QVector<int>' is registered using qRegisterMetaType().)

Therefore I registered it here. 

I have just tried to remove it and it work without any problems... so maybe the problem was somewhere else and with merging the project it has disappeared again.