Visual Studio's MSMs are already notorious for being poorly written, but there
are several blogs from Microsofties and others closely connected with the VS
team that will post mentioning which warnings can be ignored from their MSMs.
For anyone else, please ask the author of the MSM, and if you have any
leverage, insist that they address the issue(s). As MSFT owns the platform they
reserve the right to break the rules. No one else ever should (until such rules
are acknowledged to be deprecated).
You should only ever ignore a warning (or even suppress an error) only once you
deeply understand it. Otherwise push back and ask to be educated about it.
> From: laasu...@hotmail.com
> To: wix-users@lists.sourceforge.net
> Date: Tue, 20 Aug 2013 08:22:57 +0200
> Subject: Re: [WiX-users] LGHT1055 Merge modules
>
> Thank you.
>
> When should I be worried about this warning? Say I add merge module x in two
> months and get the same type of warning.
>
> Regards, Lars
>
> > From: os...@live.com
> > To: wix-users@lists.sourceforge.net
> > Date: Mon, 19 Aug 2013 09:10:17 -0700
> > Subject: Re: [WiX-users] LGHT1055 Merge modules
> >
> > That particular CA will accommodate the data from both merge modules, so
> > its inclusion just one time is OK (and correct in this case). Ignore this
> > particular warning.
> >
> > > From: laasu...@hotmail.com
> > > To: wix-users@lists.sourceforge.net
> > > Date: Mon, 19 Aug 2013 13:59:41 +0200
> > > Subject: [WiX-users] LGHT1055 Merge modules
> > >
> > > The WIX configuration below produces two warnings:
> > > warning LGHT1055 : The InstallExecuteSequence table contains an action
> > > 'SxsInstallCA' which cannot be merged from the merge module
> > > 'C:\path\path\Microsoft_VC80_CRT_x86.msm'. This action is likely
> > > colliding with an action in the database that is being created. The
> > > colliding action may have been authored in the database or merged in
> > > from another merge module. If this is a standard action, it is likely
> > > colliding due to a difference in the condition fo
> > > r the action in the database and merge module. If this is a custom
> > > action, it should only be declared in the database or one merge module.
> > > warning LGHT1055 : The InstallExecuteSequence table contains an action
> > > 'SxsUninstallCA' which cannot be merged from the merge module
> > > 'C:\path\path\Microsoft_VC80_CRT_x86.msm'. This action is likely
> > > colliding with an action in the database that is being created. The
> > > colliding action may have been authored in the database or merged in from
> > > another merge module. If this is a standard action, it is likely
> > > colliding due to a difference in the condition
> > > for the action in the database and merge module. If this is a custom
> > > action, it should only be declared in the database or one merge module.
> > >
> > > Viewing the two merge modules in Orca I see they both define the same
> > > custom action (sxsInstallCA and sxsUninstallCA). I assume this is the
> > > reason for the warning.
> > > - Does this mean that only one of the merge modules will run their custom
> > > install and uninstall action?
> > > - How do I fix or workaround this problem? I assume this must be a common
> > > problem.
> > >
> > > Thanks.
> > >
> > > <?xml version="1.0" encoding="utf-8"?>
> > > <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi";>
> > > <Product Id="490F391C-336C-4a47-A7F6-587B2C92AC92"
> > > Language="1033"
> > > Manufacturer="MyCompany"
> > > Name="MyName"
> > > UpgradeCode="E5B47089-C70D-46bd-AA9C-D222CFE9A699"
> > > Version="1.0.0.0">
> > > <Package Compressed="yes" InstallerVersion="300" />
> > > <Media Id="1" Cabinet="product.cab" EmbedCab="yes" />
> > > <Directory Id="TARGETDIR" Name="SourceDir">
> > > <!-- structure...--!>
> > > </Directory>
> > > <DirectoryRef Id="TARGETDIR">
> > > <Merge Id="OpenMP"
> > > SourceFile="C:\path\path\Microsoft_VC80_OpenMP_x86.msm" DiskId="1"
> > > Language="0"/>
> > > <Merge Id="VCRedist"
> > > SourceFile="C:\path\path\Microsoft_VC80_CRT_x86.msm" DiskId="1"
> > > Language="0"/>
> > > </DirectoryRef>
> > > <Feature Id="ProductFeature" Level="1" Title="MyTitle">
> > > <ComponentRef Id="cmp829B7EDF9835ECFBEB6B7A5E00D6B29F" />
> > > <MergeRef Id="OpenMP"/>
> > > <MergeRef Id="VCRedist"/>
> > > </Feature>
> > > </Product>
> > > </Wix>
> > >
> > > ------------------------------------------------------------------------------
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