I'm getting an "Error 1003 occurred at Open VI Reference in Dist Call Create Installer.vi->Build Application.vi." whenever I try to create an installer for my app.

[schellrd]

All of the dll's you listed are present. I uninstalled the application builder, and then re-installed it, with no luck. MSI.dll is version 2.0.2600.1106. All of the dll's are in c:\windows\system32.

I am wondering now if the problem might lie with the initial install path I chose for LabVIEW (c:\Applications\Labview 6.1 rather than the default of c:\Program Files\National Instruments\LabVIEW ...), the app builder might be looking for a file in the wrong place?

[schellrd]

I found that my problem is due to the installer being a run-time VI rather than a separate executable. I had made a cosmetic change (different connector pattern, yielded better wiring) to the Open_config.vi (in config.llb) and this is a bottom level vi for the installer. Since all of the sub-vi's for the installer were password protected, there was no way to force a "Relink to Sub-Vi" which would have quickly fixed the problem. Thanks everyone, for all of your help.