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Question by chadder06 · Mar 28, 2013 at 03:53 PM · c#build-error

Problem with mdtool - can it be fixed?

I'm running Windows Server 2003 32-bit and Unity 4.1.

I'm attempting to use mdtool.exe under the MonoDevelop\bin directory to do command line builds for three C# projects I use inside of unity.

The build runs correctly exactly One time every so often. Every other time, it fails when loading the projects. The verbose output I get is when failing is:

 MonoDevelop Build Tool
 Loading solution: C:\Program Files\Jenkins\jobs\Iris
 Integration\workspace\IrisClientLibraries.sln
    Loading solution: C:\Program Files\Jenkins\jobs\Iris
    Integration\workspace\IrisClientLibraries.sln
       Loading projects ..
 Boo.MonoDevelop.ProjectModel.BooLanguageBinding()
 UnityScript.MonoDevelop.ProjectModel.UnityScriptLanguageBinding()
 ERROR [2013-03-26 15:17:21Z]: Error while trying to load the project C:\Program Files\Jenkins\jobs\Iris Integration\workspace\src\Ami.Iris.Client\Ami.Iris.Client.csproj
 System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
    at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
    at System.Collections.Generic.Dictionary`2.Enumerator.MoveNext()
    at MonoDevelop.Core.Assemblies.AssemblyContext.GetAssemblyForVersion(String fullName, String packageName, TargetFramework fx) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Core.Assemblies\AssemblyContext.cs:line 437
    at MonoDevelop.Core.Assemblies.AssemblyContext.GetAssemblyNameForVersion(String fullName, String packageName, TargetFramework fx) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Core.Assemblies\AssemblyContext.cs:line 396
    at MonoDevelop.Core.Assemblies.ComposedAssemblyContext.GetAssemblyNameForVersion(String fullName, String packageName, TargetFramework fx) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Core.Assemblies\ComposedAssemblyContext.cs:line 208
    at MonoDevelop.Core.Assemblies.ComposedAssemblyContext.GetAssemblyNameForVersion(String fullName, String packageName, TargetFramework fx) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Core.Assemblies\ComposedAssemblyContext.cs:line 208
    at MonoDevelop.Projects.ProjectReference.UpdatePackageReference() in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectReference.cs:line 349
    at MonoDevelop.Projects.ProjectReference.SetOwnerProject(DotNetProject project) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectReference.cs:line 100
    at MonoDevelop.Projects.DotNetProject.OnItemsAdded(IEnumerable`1 objs) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\DotNetProject.cs:line 1040
    at MonoDevelop.Projects.ProjectItemCollection`1.NotifyAdded(IEnumerable`1 items, Boolean comesFromParent) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectItemCollection.cs:line 153
    at MonoDevelop.Projects.ProjectItemCollection`1.OnItemAdded(T item) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectItemCollection.cs:line 113
    at MonoDevelop.Projects.ItemCollection`1.InsertItem(Int32 index, T item) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ItemCollection.cs:line 39
    at System.Collections.ObjectModel.Collection`1.Add(T item)
    at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectHandler.Load(IProgressMonitor monitor, MSBuildProject msproject) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Formats.MSBuild\MSBuildProjectHandler.cs:line 420
    at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectHandler.Load(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String language, Type itemClass) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Formats.MSBuild\MSBuildProjectHandler.cs:line 291
    at MonoDevelop.Projects.Extensions.DotNetProjectNode.LoadSolutionItem(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String itemGuid) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Extensions\DotNetProjctNode.cs:line 66
    at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectService.LoadItem(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String typeGuid, String itemGuid) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Formats.MSBuild\MSBuildProjectService.cs:line 91
    at MonoDevelop.Projects.Formats.MSBuild.SlnFileFormat.<>c__DisplayClass6.<LoadSolution>b__2(IProgressMonitor , String ) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Formats.MSBuild\SlnFileFormat.cs:line 745
    at MonoDevelop.Projects.DefaultProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectService.cs:line 672
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.CompiledAssemblyExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\CompiledAssemblyProject.cs:line 223
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 102
    at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects\ProjectServiceExtension.cs:line 93
    at MonoDevelop.Projects.Extensions.ProjectExtensionUtil.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Extensions\ProjectExtensionUtil.cs:line 59
    at MonoDevelop.Projects.Formats.MSBuild.SlnFileFormat.LoadSolution(Solution sol, String fileName, MSBuildFileFormat format, IProgressMonitor monitor) in c:\BuildAgent\work\f07246b5212f7be4\monodevelop\main\src\core\MonoDevelop.Core\MonoDevelop.Projects.Formats.MSBuild\SlnFileFormat.cs:line 744
          WARNING: Error while trying to load the project 'C:\Program
          Files\Jenkins\jobs\Iris
          Integration\workspace\src\Ami.Iris.Client\Ami.Iris.Client.csproj':
          Collection was modified; enumeration operation may not execute.


I can load and build the project perfectly in the MonoDevelop IDE as much as I want. It seems that if I do a rebuild in the MonoDevelop IDE, I can get exactly One additional successful build, although it doesn't seem to be the attempt immediately after I close MonoDevelop. It is usually the third or fourth try.

I have no issues running command line builds on a separate Windows 7 x64 machine.

Does anybody have any hints about how I can get this to work reliably?

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