I'm having the same issue as well. There was no provisioning issue up to like to days ago. Created a new app today, tried to run it on my iPhone and the "(This provisioning profile does not have a valid signature (or it has a valid, but untrusted signature).)" Error popped up and nothing I tried worked to resolve it. Old apps that I had from before today have the same issue now as well. Will we be notified when this is resolved as this appears to be a widespread issue?