cant open public keyring file

[Matt D]

my open pgp wont work.  i cant get keys.  using ubuntu 12.10.  latest
version of gpg.

OpenPGP Security Info

Unverified signature

gpg command line and output:
gpg
gpg: Signature made Wed 14 Aug 2013 07:32:07 AM EDT
gpg:                using DSA key 0x5BB6809BAE445B2E
gpg: can't open `/home/matt/.gnupg/pubring.gpg'
gpg: keydb_search failed: file open error
gpg: Can't check signature: public key not found
gpg: Signature made Wed 14 Aug 2013 07:32:07 AM EDT
gpg:                using RSA key 0xAE2FF2140E7A0087
gpg: can't open `/home/matt/.gnupg/pubring.gpg'
gpg: keydb_search failed: file open error
gpg: Can't check signature: public key not found
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Matt D
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