I just purchased a new MacBook and can't successfully get Xcode to run my apps on a device. I've used Apple's Provisioning Assistant, installed new provisioning profiles and my certificate, but I always get the error "A valid provisioning profile for this executable was not found." The only weird thing I can see is that in keychain, next to my certificate it does not have the triangle that expands and says "iOS Developer" under it like it did on my old laptop. Does anyone know what I'm doing wrong or how to get it let me run my apps on devices again? Thanks in advance for any help.