I get this error when I try to build my web deployment project.

When I enable detailed output, I get this:

Target AspNetMerge:
  Using "AspNetMerge" task from assembly "C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\Microsoft.WebDeployment.Tasks.dll".
  Task "AspNetMerge"
    Running aspnet_merge.exe ...
    Command:
    C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\aspnet_merge.exe C:\Projects\GT\GT2005\development\GT2005.NET\deploy\Twi.Gt.Aui_deploy\Debug -o Twi.Gt.Aui_deploy -debug -copyattrs
    The "AspNetMerge" task is using "aspnet_merge.exe" from "C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\aspnet_merge.exe".
    Utility to merge precompiled ASP.NET assemblies.
    Copyright (C) Microsoft Corporation. All rights reserved.
   
    An error occurred when merging assemblies: ILMerge.Merge: ERROR!!: Duplicate type 'MasterPage' found in assembly 'App_Web_mc4d9mid'.
    C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\Microsoft.WebDeployment.targets(474,9): error MSB6006: "aspnet_merge.exe" exited with code 1.
  Done executing task "AspNetMerge" -- FAILED.
Done building target "AspNetMerge" in project "Twi.Gt.Aui_deploy.wdproj" -- FAILED.

Done building project "Twi.Gt.Aui_deploy.wdproj" -- FAILED.


It seems to have a problem related to master pages (I have 2 of them in my web site project).

Regards,
Martin

Could you provide a little more detail about the structure of your web?  Specifically, are the two masterpages in the same folder or separate folders?  If separate, are they named the same or different?

Hi Tania, the two masterpages are in the same folder (the root of the web site).
One is named "MasterPage.master", the other one "Popup.master".

Hope this helps.

Thanks,
Martin

Martin-

I'm having trouble reproducing your problem, but I'm just doing the basics:
1.  Create a new web (on http://localhost and VB)
2.  Add a masterpage to the root (Masterpage.master, code in separate file)
3.  Add a masterpage to the root (Popup.master, code in separate file)
4.  Build / Publish Web Site, accept defaults and click OK.

I think it would be helpful if you could provide any info on additional steps you performed, and the contents of your masterpages.