Debug/ModCableBeach.dll gmcs WARNING assembly referenced from bin/DotNetOpenAuth.dll could not be loaded

[AllenKerensky]

OS: Linux 2.6.31-22-generic-pae #61-Ubuntu SMP Wed Jul 28 03:15:32 UTC 2010 i686 GNU/Linux
Mono: Mono JIT compiler version 2.4.2.3 (Debian 2.4.2.3+dfsg-2)
Nant: NAnt 0.85 (Build 0.85.2478.0; release; 10/14/2006)
Taiga: 0.1.2-8 3e3b38f

 [nant] /home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/ModCableBeach.dll.build build
        Buildfile: file:///home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/ModCableBeach.dll.build
        Target framework: Mono 2.0 Profile
        Target(s) specified: build


        build:

             [echo] Build Directory is /home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/bin/Debug
            [mkdir] Creating directory '/home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/bin/Debug'.
              [csc] Compiling 45 files to '/home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/bin/Debug/ModCableBeach.dll'.
              [csc] ** (/usr/lib/mono/2.0/gmcs.exe:19925): WARNING **: The following assembly referenced from /home/user/realXtend-taiga-3e3b38f/bin/DotNetOpenAuth.dll could not be loaded:
              [csc]      Assembly:   System.IdentityModel    (assemblyref_index=11)
              [csc]      Version:    3.0.0.0
              [csc]      Public Key: b77a5c561934e089
              [csc] The assembly was not found in the Global Assembly Cache, a path listed in the MONO_PATH environment variable, or in the location of the executing assembly (/home/exile/realXtend-taiga-3e3b38f/bin/).
              [csc] ** (/usr/lib/mono/2.0/gmcs.exe:19925): WARNING **: Could not load file or assembly 'System.IdentityModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
              [csc] ** (/usr/lib/mono/2.0/gmcs.exe:19925): WARNING **: Could not load file or assembly 'System.IdentityModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
              [csc] ** (/usr/lib/mono/2.0/gmcs.exe:19925): WARNING **: Could not load file or assembly 'System.IdentityModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
              [csc] Unhandled Exception: System.Reflection.ReflectionTypeLoadException: The classes in the module cannot be loaded.
              [csc]   at (wrapper managed-to-native) System.Reflection.Assembly:GetTypes (bool)
              [csc]   at System.Reflection.Assembly.GetTypes () [0x00000]
              [csc]   at Mono.CSharp.RootNamespace.ComputeNamespaces (System.Reflection.Assembly assembly) [0x00000]
              [csc]   at Mono.CSharp.RootNamespace.ComputeNamespaces () [0x00000]
              [csc]   at Mono.CSharp.Driver.LoadReferences () [0x00000]
              [csc]   at Mono.CSharp.Driver.Compile () [0x00000]
              [csc]   at Mono.CSharp.Driver.Main (System.String[] args) [0x00000]

        BUILD FAILED - 0 non-fatal error(s), 16 warning(s)

        /home/user/realXtend-taiga-3e3b38f/addon-modules/ModCableBeach/Modules/ModCableBeach.dll.build(14,6):
        External Program Failed: /usr/lib/mono/2.0/gmcs.exe (return code was 1)

        Total time: 0.6 seconds.

BUILD FAILED
Nested build failed. Refer to build log for exact reason.