I just found out that my 2.0 built packages do not work on 1.x Windows installer machines. Is there a way to force adminstudio to build 1.x packages? Please let me know.
If you build a release using Developer's Release Wizard, there's an option to use the MSI 1.x engine and schema.
(If you have a copy of Administrator's Introduction to Application Repackaging and Software Deployment using Windows Installer---www.installshield.com/ispress---this is described in Chapter 15, pp. 452-3...)
You should still be able to open the ISM file with Developer, and build a new release with the Release Wizard; you might search the online help for "Release Wizard"...
Also I noticed that the Release wizard in AdminStudio 5.0 has an option for 1.x builds but the release wizard in Adminstudio 3.0 does not. Do you know anything about this?
Oh, sorry, yes: in AdminStudio 3.0, the Developer tool was called Author.
If the option to use MSI 1.2 isn't present in your version, you might have a look at InstallShield Knowledge Base article Q105489, at http://support.installshield.com/kb.