I would actually consider that desirable behavior in my product, since version 2.1 was designed and tested with bbb.dll version 1.0 - not version 1.5. What's happening is the removal of product 2.0 causes the reference count on component bbb.dll to go to zero, and so MSI deletes the file. Then the new version installs a fresh copy of bbb.dll version 1.0.
If you want to retain the behavior you describe, then you would need to test product version 2.1 with both bbb.dll versions 1.5 and 1.0. Version 1.5 would occur when the user upgrades and version 1.0 would occur on a clean install of product 2.1. If at all possible, I like to just to put the DLLs alongside your application in the application directory, and not put them in a shared place like the Windows System32 directory - this is easier since you only have to test one configuration instead of two. This tends to be a recommended way of doing things to avoid "DLL Hell". That said, sometimes 3rd-party components have prescribed ways of installation and there's nothing you can do about it. And maybe there are some reasons for keeping the bbb.dll file around. For example, you might have bbb.dll as a 3rd-party component in the SYSTEM32 directory. In that case I would set the "Permanent" and "SharedDllRefCount" attributes both to "yes". Permanent will add an extra reference to the component during installation, so that it doesn't get deleted on uninstall (or therefore an upgrade). SharedDllRefCount deals with maintaining a similar, older-style reference counting scheme for non-Windows Installer installers so that some other non-MSI installer doesn't wipe your DLL from underneath you. James -----Original Message----- From: Igor Lemsky [mailto:igor.lem...@gmail.com] Sent: Friday, February 25, 2011 04:57 To: General discussion for Windows Installer XML toolset. Subject: Re: [WiX-users] Problem with RemoveExistingProducts action It seems that I dont break component rules... I just add new component into existing feature and trying to upgrade. Besides I put it after InstallInitialize, but now take another problem. If some of dlls will have lower version - it deleted during upgrade. If product version 2.0 have bbb.dll version 1.5, and product version 2.1 have dll version 1.0 - it just erase it during upgrade! As I understand it must leave bbb.dll version 1.5... On Tue, Feb 22, 2011 at 9:13 PM, James Johnston <johnst...@inn-soft.com>wrote: > In that case you have to be following component rules. See > http://www.joyofsetup.com/2008/12/30/paying-for-upgrades/ Also with > your placement, if the old version fails to uninstall then the user > will have both old & new versions installed - something to keep in mind. > > Try putting it after InstallInitialize. The old version will be > uninstalled first before anything new is installed. If the install of > the new product fails then the rollback will restore the old version. > > If you use DIFxApp for driver installs then it needs to be put between > InstallValidate and InstallInitialize due to a bug in DIFxApp. In > that case a failed install of the new product but after the successful > uninstall of the old product will leave the computer with no product > installed at all. > I > think that must be a good place to put it if there are buggy custom > actions and component rules aren't being well-followed. > > James > > -----Original Message----- > From: Igor Lemsky [mailto:igor.lem...@gmail.com] > Sent: Tuesday, February 22, 2011 06:04 > To: General discussion for Windows Installer XML toolset. > Subject: [WiX-users] Problem with RemoveExistingProducts action > > I have upgrade scenario for my system from 2.0 version to 2.1 version. > I have file for example aaa.xml in 2.1 version and no such file in 2.0 > version. It lies in independent component i feature Afeature (it was > in 2.0 also). During install there are no problems: file installs to > the right location. But during upgrade from 2.0 version it copies and then deleted. > It seems that RemoveExistingProducts deletes it during uninstall of > older > 2.0 product. It planned after InstallFinalize action (the most right > place as I understand). > Due to the log Installer unpublish features and the delete files... > MSI (s) (DC:B8) [11:54:05:148]: Executing op: > > FileRemove(,FileName=aaa.xml,,ComponentId={369A88EA-F2DD-4124-9560-13E > 5694E2 > EEB}) > RemoveFiles: File: aaa.xml, folder: C:\Mag\ > > I dont understand - what happened? Why it deletes files? May be I > didnt configured installer correctly? 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