Software Deployment

Trying to push an agent out for LanDesk via GPO. Have about 5000 computers and about half of them work fine but the other half all show the same GPO errors when I took at the policy results. Has anyone encountered this? Using Windows 7 enterprise SP1. Did some googling and im seeing that its an asynchronous issue. But I've tried using the "wait for network connection" policy as well as the "Specify startup policy processing wait time" with no luck.

Error 103 reads: The removal of the assignment of application Advance Agent from policy IVAgent failed. The error was : The system cannot find the file specified.

This is strange as the NTFS permissions on the folder where the installer is had Read permissions for the EVERYONE group. The share also has read access for EVERYONE.

I have found that installing the hotfix rollup KB2775511 seems to resolve this issue. When i install it on affected computers, they start installing the software right away. I have tried to install every hotfix in the rollup individually, but only 1 of them seems to work on SOME computers. There are some individual hotfixes in that rollup that i cant seem to find anywhere.