I'm trying to package an application for the Android Market for the first time.

I've been following this how-to:

http://lessons.runrev.com/spaces/lessons/buckets/1004/lessons/32674-How-do-I-Create-a-Self-Signed-Certificate-for-an-Android-App-

I've gotten to the point where I use jar signer to sign the apk file, but i get this message in the terminal:

crossman-wilkinss-macbook-pro:~ crossmanwilkins$ jarsigner -verbose -keystore release.keystore Crossman Wilkins Resume.apk Crossman Wilkins Resume
Enter Passphrase for keystore:
jarsigner: Certificate chain not found for: Wilkins. Wilkins must reference a valid KeyStore key entry containing a private key and corresponding public key certificate chain.

What does this mean? I was of the understanding that the release.keystore that I created is the certificate so why is it not able to find it?

Any suggestions would be helpful.