The Microsft Visual Studio 2015 Professional edition should be supported by Test Complete/Test Execute. We have MSDN with Professional Edition and there was no problem working with Test Complete 9. Moving to Windows 10 required to use the latest Test Complete.
But now we cannot use it with Visual Studio 2015 Professional.
Thanks for your question. Our QA Team has informed that there was some issues with the installation. Those issues had been fixed. Could you please contact our Customer Care Team to get the patch? You can reach out to them here: http://support.smartbear.com/product-list/