I am currently developing a VB 6.0 Application on an old PC running Windows XP. In it's simplest terms, the Application displays a Hierarchical Family Tree structure in a TreeView Control. The application consists of seven Forms, a Standard Code Module, a TreeView Control which is the main focus of the App, Image List Controls, and some Standard Controls. The App runs perfectly fine in the XP Environment. Using the Package & Deployment Wizard, I created a basic Package to test on Windows 10 PCs. The installation process in Windows 10 is seamless and the Program is executed from within a pre-defined Program Group. The Initial Screen displays some Version Information, credits, etc. The next screen is an introduction to the App and consists of only a couple Images and informational text. The next screen is the pivotal one with a TreeView Control being dynamically populated with static data. This all works well in XP, but in this screen with the TreeView in Windows 10 no Nodes of the TreeView are displayed, no Errors, just a blank TreeView. I tried using regsvr32.exe to manually Register comctl32.ocx to see if this was the problem, but it would not Register. A lot of work went into this Application and the family is looking forward to seeing it, so I sincerely hope one of you guys can point me in the right direction. I thank anyone in advance for offering assistance.