I inherited a project off of a prior developer with the company. We're running into a minor issue in the field where users attempting to install an older version of the software aren't getting any sort of a prompt; the setup just closes immediately. I'm trying to get up to speed on InstallShield, but I also don't want to beat my head against a brick wall any more than I have to. The ISPreventDowngrade settings are as follows:
Sequence Number: 450
Conditions: ISFOUNDNEWERPRODUCTVERSION
Comments:
Is there a way to change this so that it prompts the user to ask whether they want to downgrade, or at least display a helpful messages saying that they will have to uninstall the current version to install the older one?
If it helps, this is where it seems to fail in the log (codes redacted because I never know what might be sensitive):
7-6-2017[10:20:58 AM]: Upgrade check: checking product code {X555XX55-555X-55X5-55X5-55X5X55555X5}
7-6-2017[10:20:58 AM]: Upgrade check: obtained package code {XX5X5X55-5X55-5XX5-55XX-55555X55555X} from machine, current package code is {55XX55XX-5XX5-55X5-X55X-XX55X5XX5X5X}
7-6-2017[10:20:58 AM]: Upgrade check: later product version already installed
7-6-2017[10:21:00 AM]: Dumping setup.ini...