Comments on: The case of the missing Mergemod.dll in WiX v3.0.4123 http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/ Bob Arnson's blog about setup and servicing Fri, 23 Jul 2010 01:04:00 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Christopher Painter http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/comment-page-1/#comment-6577 Christopher Painter Wed, 18 Jun 2008 03:36:22 +0000 http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/#comment-6577 I used to have this problem at Continental Airlines all the time because I had internal VB6 teams and external vendors that I was repackaging that just refused to follow proper versioning practices. Ya, I know.. I tried to get them to change the ways but thems the breaks. The problem was easily solved by `Always Overwrite` ( not AMUS... an InstallShield feature that increments the File table to the upperbound ) and I never saw any adverse effects. I used to have this problem at Continental Airlines all the time because I had internal VB6 teams and external vendors that I was repackaging that just refused to follow proper versioning practices. Ya, I know.. I tried to get them to change the ways but thems the breaks.

The problem was easily solved by `Always Overwrite` ( not AMUS… an InstallShield feature that increments the File table to the upperbound ) and I never saw any adverse effects.

]]> By: Bob Arnson http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/comment-page-1/#comment-5774 Bob Arnson Tue, 03 Jun 2008 14:54:29 +0000 http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/#comment-5774 Alasdair, With a bootstrapper/chainer, you could do the uninstall from it which would prevent the problem. The problem is during the major upgrade, MSI doesn't want to downgrade the file. Alasdair,

With a bootstrapper/chainer, you could do the uninstall from it which would prevent the problem. The problem is during the major upgrade, MSI doesn’t want to downgrade the file.

]]> By: Alasdair King http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/comment-page-1/#comment-5758 Alasdair King Tue, 03 Jun 2008 09:40:04 +0000 http://www.joyofsetup.com/2008/05/27/the-case-of-the-missing-mergemoddll-in-wix-v304123/#comment-5758 Hey, so what would be your take on how to best handle this situation? 1 Change the installer so it automagically uninstalls the old version before installing the new - need to stop it checking for old components to skip, too. Most Installer work. 2 Hack the old DLL to increase the version number, so you don't have to change your installer. Might need to re-sign the DLL. Least installer work, breaks DLL versioning. 3 Stop the installer installing if the old package is still installed. Most user pain. 4 Something else? Hey, so what would be your take on how to best handle this situation?

1 Change the installer so it automagically uninstalls the old version before installing the new – need to stop it checking for old components to skip, too. Most Installer work.

2 Hack the old DLL to increase the version number, so you don’t have to change your installer. Might need to re-sign the DLL. Least installer work, breaks DLL versioning.

3 Stop the installer installing if the old package is still installed. Most user pain.

4 Something else?

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