5 replies to this topic

[PaulDeveloper]

Hello everyone!

I have a MSI/Standard project in IS 7.04, which upgrades an application previously deployed with another installer (vb).

The upgrade seemed to work ok - uninstalled the old files, installed the new ones.  However, the application is currently installed on my machine, but wen I run the install I get the dialogs for a fresh install!

I have run a simple MessageBox test, and the maintenance property is not being set on a maintenance install!


Can anyone please help?

[Stefan Krueger]

MSI update will only detect old version and enter maintenance mode if the old version was also installed using MSI technology (and the product code hasn't changed)

[PaulDeveloper]

Sorry, I didn't make myself clear.

The previous version did use msi, just not Installshield.

I'm trying to do a major upgrade of this version. The IS help says to keep the UpgradeCode the same, but to change the PackageCode and ProductCode.  I have done this, and the upgrade appears to work.

The problems only come when you try to remove the new version, because the maintenance property is not set.

[Stefan Krueger]

Sorry, I mis-read your original post. For a major upgrade changing the ProductCode is correct.
However I'm not sure what "maintenance" property you mean?

[PaulDeveloper]

I mean the MAINTENANCE system variable.  Quoting from the help:

"This system variable is set to TRUE if your installation program is running in maintenance mode, or set to FALSE for a first-time installation."

I used this InstallScript in the OnBegin handler as a test:

if(MAINTENANCE) then
szTemp = "MAINTENANCE set!";
else
szTemp = "## MAINTENANCE not set! ##";
endif;
MessageBox(szTemp,INFORMATION);

[Stefan Krueger]

In case of a major upgrade your setup doesn't enter maintenence mode 8in this meaning). It uninstalls the old version, and then performs a fresh install of thre new version.