Thanks Rick for your suggestions. The TreeView controls is a .2 alright. I'll check for the mccomctl.ocx versions. Is it okay to overwrite an older version with a newer one?

>>Rick sorry for being ambigous. But actually there are no messages except from the app which is to the effect that there is initializing problems. Though the form will work normally but the TreeView area will show as a blank white area.
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>>This same installation if installed on a machine having having VS6 or another having VS.net wont have any problem and the same form, same app, same build with the treeview will work without a glitch. The exact error messages I don't have handy, but they were less clear promise. I use CodeBook as a framework. I have tried installation from my W2KPro machine to a W98 (failed as stated above), another W2K with VS.net (successful), XP machine no VS (failed as above).
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>>Hope this will shed more light. In the mean time I will try to gather the exact messages.
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>It might be helpful to check the version of mscomctl.ocx on the various machines and see if it's different on the machines where the treeview control works vs. on the machines where it doesn't work. Also I'd check the version of the treeview control in your VFP form(s). Look at the OleClass property and make sure it says MSComctlLib.TreeCtrl.2, or at least that it has a '.2' version. If it says '.1' it's the older treeview control from comctl32.ocx, in which case you would need to distribute that file as well.