I'm trying to add a new SSL certificate to my Google App Engine account, but after following all the steps in the manual I kept getting this error uploading the Unencrypted PEM encoded RSA private key:
The private key you've selected does not appear to be valid.
Anyone have experienced this issue?
I had the same problem last week. Google's instructions are lacking...
Your PEM file has this line:
-----BEGIN RSA PRIVATE KEY-----
Delete everything above this line and it will work.