>This may seem very elementary to many, but I've been having problems with the addition of a MMortals treeview class. The treeview runs fine as long as the MSCOMCTL has been installed. This is an existing application and only an update of an app not the entire application.
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>What is the proper way to install the MSCOMCTL control? SHould I redo the initial installation of the application and have all my users (250+) do an uninstall and reinstall?

Jon,

It would depends on what tool you used to create installation. For example, if you used Installshield Express (ISX) that came with VFP, than you can create Upgrade Path installation and include only updated components.