Hi,
Essential Studio Version 7.3.0.20 is the version termed as Essential Studio 2009 Vol.3. The Essential Studio 2009 Vol.3 Refresh build was expected to be available after that. However we have stopped the Refresh build and we had sent out the Essential Studio 2009 Vol.4. This issue has been fixed in this build (7.4.0.20). You can download the same from the following location.
http://www.syncfusion.com/downloads/latest-versionThanks for your interest in Syncfusion Essential Studio.
Regards,
Nanda