keypairs missing following upgrade

Following upgrade post Beta 2 of Oneiric, the existing keypairs are missing. euca-add-keypair succeeds in adding keypairs of the same name.

On inspection, keypairs created at Beta 2 are:
+---------------------+----+-------+---------+-------------------------------------------------+
| created_at | id | name | user_id | fingerprint |
+---------------------+----+-------+---------+-------------------------------------------------+
| 2011-09-24 21:56:17 | 5 | foo | admin | ae:06:8e:9b:73:90:66:c4:11:a4:e7:e0:0c:6f:a6:dc |
+---------------------+----+-------+---------+-------------------------------------------------+

Following, there are such:
+---------------------+----+-------+--------------------------------------+-------------------------------------------------+
| created_at | id | name | user_id | fingerprint |
+---------------------+----+-------+--------------------------------------+-------------------------------------------------+
| 2011-09-22 16:25:31 | 3 | foo | 155d0887-b222-4975-8e06-3c2de4a7ebcc | 97:21:4f:93:cd:c6:8c:f8:f4:34:ad:26:90:b1:4f:25 |
+---------------------+----+-------+--------------------------------------+-------------------------------------------------+

The provided novarc differs between old -> new such:
4c4
< export EC2_ACCESS_KEY="155d0887-b222-4975-8e06-3c2de4a7ebcc:novaproject"
---
> export EC2_ACCESS_KEY="admin:novaproject"
15c15
< export NOVA_API_KEY="155d0887-b222-4975-8e06-3c2de4a7ebcc"
---
> export NOVA_API_KEY="admin"

The freshly retrieved nova.zip fails to work against the existing configuration returning:
$ euca-describe-instances
Warning: failed to parse error message from AWS: <unknown>:1:0: syntax error
None: None