Adobe has released LiveCycle ES2 Service Pack 1. Service Pack 1 updates LiveCycle ES2 server components,LiveCycle Workbench ES2, (updating both is required) and can only be deployed on LiveCycle ES2.
Please visit, https://www.adobe.com/cfusion/entitlement/index.cfm?e=lces2_sp to download Service Pack 1. Additional details on the contents of the service pack, including the issues it addresses and installation instructions are included in the Read Me file available at the same URL. A file extraction utility such as WinZip/gnu tar/unzip will be required in order to extract the files prior to running the installation.