I used the dashboard to create a router, a network, then created a Ubuntu 14.04 VM. I have tried creating the VM with "Create keypair" and also with "Import keypair" and pasting the public key. I associated a floating IP and I can ping the IP from a DOS cmd prompt. When I try to access the VM using PuTTY I get the "Server refused our key" error. I checked the log file in the Horizon dashboard and I see cloud-init and sshd are started. With PuTTY I get "PuTTY Fatal Error" with "Disconnected: No supported authentication methods available (server sent: publickey)"

I must be missing something very basic during my VM creation. What do I need to do to be able to access my VM?

Here is the log file from Horizon:

 * Starting NTP server ntpd       [80G [74G[ OK ]
 * Stopping CPU interrupts balancing daemon[74G[ OK ]
open-vm-tools: not starting as this is not a VMware VM
 * Starting automatic crash report generation[74G[ OK ]
landscape-client is not configured, please run landscape-config.
 * Restoring resolver state...       [80G [74G[ OK ]
touch: cannot touch '/var/lock/subsys/local': No such file or directory
 * Stopping System V runlevel compatibility[74G[ OK ]
Generating locales...
  en_US.UTF-8... up-to-date
Generation complete.

Ubuntu 14.04 LTS vm01 ttyS0

vm01 login: Cloud-init v. 0.7.5 running 'modules:final' at Thu, 15 Jan 2015 16:04:20 +0000. Up 9.62 seconds.

vm01 login: Cloud-init v. 0.7.5 running 'modules:final' at Thu, 15 Jan 2015 16:04:20 +0000. Up 9.62 seconds.
ci-info: +++++++++++++++Authorized keys from /root/.ssh/authorized_keys for user root+++++++++++++++
ci-info: +---------+-------------------------------------------------+---------+-------------------+
ci-info: | Keytype |                Fingerprint (md5)                | Options |      Comment      |
ci-info: +---------+-------------------------------------------------+---------+-------------------+
ci-info: | ssh-rsa | xx:xx:xx:xx:xx:xx:xx:74:7f:b1:6e:ef:ac:14:xx:xx |    -    | Generated by Nova |
ci-info: +---------+-------------------------------------------------+---------+-------------------+
ec2: 
 :
 :
Cloud-init v. 0.7.5 finished at Thu, 15 Jan 2015 16:04:20 +0000. Datasource DataSourceConfigDriveNet [net,ver=2][source=/dev/sr0].  Up 9.70 seconds