I have a basic MSI file which I have used for a few years now. For each product update (all the same version just different sub-version) I simply rebuild with the changed files and allow Installshield to change the package file and this has worked great for many sub-versions and means I only build one installation which is both for new customers and upgrading alike. Today I have just done exactly the same and built my msi as a .exe as usual. Run from within InstallShield 10 it works fine, say it is removing the old product and installs the update.
If however I run the .exe from outside InstallShield it says 'Do you want to upgrade this product', goes all the way to the end without any obvious errors but does not update any files. I have restored the installation from a backup to be sure I haven't accidentaly changed anything but i can't explain this change in behaviour and why it works when run from inside Installshield but not when running the executable direct.
If however I run the .exe from outside InstallShield it says 'Do you want to upgrade this product', goes all the way to the end without any obvious errors but does not update any files. I have restored the installation from a backup to be sure I haven't accidentaly changed anything but i can't explain this change in behaviour and why it works when run from inside Installshield but not when running the executable direct.