You may encounter an issue while trying to install the August 2014 Cumulative Update for Microsoft Lync Server 2013 on a computer with just the Lync Server Core Components and/or Lync Server Administration Tools installed. In the screenshot below, you can see that I only have the Lync Server Core Components and Lync Server Administration Tools installed:
If I try to apply the August 2014 Cumulative Update for Microsoft Lync Server 2013:
I get the following error message:
There were errors during the installation process. For details, see the log file at C:\Users\Administrator.TEST\Desktop\Lync_patchinstallerlog-TEST-LS15-MGMT-[2014-08-19][15-53-17].txt
and you can see that the Lync Server Core Components aren't updated:
For more information on this issue, please see KB2993188.
I had this issue last Friday when patching an environment with January 2014 CU. Exact same error. Server was just there as a Management Server and only had Core + Admin Tools installed. I'll keep an eye out for a fix.