ZCM 11.1a Agent Deployment Errors

I have about 100 machines that are failing the ZCM Agent update through System Update in ZCC. 95% of the machines that are failing the update are running Windows 7 SP1. We are upgrading our agents from 10.3.3 to 11.1a. After looking through our logs I found the following errors:

-Taken from authtokenclient.x86_64.msi.log
MSI (s) (44:7C) [10:32:43:562]: Note: 1: 2262 2: Error 3: -2147287038
MSI (s) (44:7C) [10:32:43:562]: Product: Novell CASA Authentication Token Client (x64) -- Unable to install because a newer version of this product is already installed.

-Taken from sytem-update.log
DEBUG;;;creating path: C:\Program Files (x86)\Novell\ZENworks\cache\zmd\ZenCache\0cac0cbe-6de1-43af-bf8a-d91c986c4f8e\authtokenclient.x86_64.msi
ERROR;MSI_INSTALL_ERROR;authtokenclient.x86_64.msi ,1603;
DEBUG;;;An error occured during command execution...details should have already been logged

I'm not sure why there would be a newer version of authtokenclient or why the installer would fail during the update. But when the system update finishes, the machines have a partially installed ZCM agent. The ZCM icon is new, the Agent Status bundles are all 11.1, but the ZENworks Adaptive Agent Version is still 10.3.3.4426. So, I'm a little stuck as to why these machines are not updating. Thanks.

-Nate