My client realized that his DQS client version was older than the DQS servers he was connecting. All the servers were SP1 CU4 so he ran the CU4 service pack in hopes his DQS client would upgrade. It did not. Since he just has the client tools installed he wasn't able to run the dqsintaller upgrade dll option. Has this issue been reported? Is there a workaround? My client needs to solve this as he can no longer update KBs as he gets an error likely caused by using an older version of the client with newer servers.