We recommend users to move to the latest version build #91099 (How can I find my Build number?)
Customers using builds 91000 and above can install this hotfix. Customers using builds less than 91000 will have to upgrade to 91000 first and then install this Hotfix. Refer to Service Packs page for upgrading to 91000.
Log in to the Desktop Central web client, and click the "About us" link in the top pane. You will find the build number mentioned below the version number.