simple solution is to format you computer & re-download the new version of C2 and give it a try .....
Hell no lol
Are you using scirra version or steam version.
Steam version, this is common and happened to me repeatedly. It is the steam authoring layer over construct2 and "they(steam) refuse to fix it"
Non steam. Registry files can cause issues.
formating a pc is last last last resort. Try windows all repair it is free, it works miricles, and yes it sorts out the registry files etc etc.