Normally the uninstall removes all the Registry entries created during the install operation. But when the uninstall is being done before an upgrade I'd like it to leave the old license variable in the Registry, so the user doesn't have to re-register the application after upgrading. I'd also like the install, when it's being done as an upgrade, to not write new, blank, license variables into the Registry. Is there a a way to make this happen?
Thanks
Steve