Hi John,
It sounds like you have registered the version 6 controls but the loader is attempting to use version 5 of the controls. If that's the case, use the Report Wizard Builder to switch the ActiveX controls (actually, their loaders; see below) to version 6. The OCXs that contain version 6 of these controls are:
MSCOMCTL.OCX for the TreeView and ImageList controls
COMDLG32.OCX for the CommonDialogs control (yes, this is the same file as listed earlier)
You can get more information on using the Report Wizard Builder from the SFReports.chm file.
Hope this helps.
Yuanitta