A new version of the TerraFlex Desktop add-in for ArcGIS Desktop (ArcMap) is available for download here (with required coordinate system files available here). The add-in supports TerraFlex on Connect and TerraFlex on InSphere workflows and replaces v4.10 from earlier this year. Please see additional information below regarding new features, improvements, and bug fixes.
Note: The initial release of the add-in was posted for download on December 3rd and would have displayed as "5.0" in ArcMap. In the intervening few weeks, a few bugs were identified (included in the section below) and fixed. The latest build, displayed as "5.0.3" in ArcMap, was made available for download on January 13th.
In certain deployment scenarios, customers may need to manually configure the database connection. A configuration application can be downloaded here. Unzip the files and run it from there - no installation is required.