I am not sure, but it sounds like there may be a dependency issue. I found some info on MSDN that may be helpful to you. I don’t have much experience with VB6, as I have primarily developed in .NET. I know in that enviroment, you have to be sure to include ‘dotnetfx’ as part of the installation package, or it will not deploy properly. I hope the link is helpful to you.

http://support.microsoft.com/kb/236529

From the looks of your error message… the answer looks simple: a particular file that the setup program is looking to register on the other computer is missing! — but the solution is not so simple… you must determine exactly which file is missing, and where is it expecting to find that file. The answers to that lie within your setup file itself: for it contains all expected paths and file names, which are (first of all) based upon their occurrance in the system on which you created the program, and then as they relate to wherre they are to end up on the new system. Microsoft’s Deployment wizard is supposed to handle all of that (invisibly, for the most part) for you. But the truth is, it doesn’t always work out that way in practice. You also have to be aware of version issues surrounding any “.dll”s that may be required by your application. Sometimes a target system may not allow you to “update” to an older version that you may have in your setup files.

To help you any further, I would have to see a listing of all of the files your setup is trying to install and/or register, as well as their directory location: source and target.