Hi
Deleting all the keys folder does create a new CRS file.
However, in my situation my Apps use Push notifications so recreating certs/profiles is a bit of a pain. However, I did find a fix (it maybe just magic) so I am not sure it will work for everyone.
The background was most of my certs and profiles ran out on 17th July (and my Apple developer subscription a few days before) - I found on 17th July when I attempted to compile the code, it produced the problems explained in post #1.
Followed Erel's instructions (from the tutorials) but it still reported the same problem. Also the Bridge just stopped working and I had to reinstall it.
Now my devices are already registered with Apple, so I skipped the device registration phase in Erel's tutorial.
However, when I did click on the Devices a message appeared asking me to reset the list? So I reset and it appeared to remember all my devices.
I then re-issued all the expired certs and profiles and the Apps then compiled without problems!
Well (I still believe it was fixed by magic!) but, if your subscription has just renewed and there are some certs and profiles needing renewal - CHECK your devices list for a "Reset Message" and select reset (even if you are not registering a new device), it could fix the problem.
Best of luck
Dave