[MonoDevelop] Help Trying to compile monodevelop alpha2 on ubuntu 8.04

[alan]

I compiled and installed mono-addins-0.3.1 but had to miss compiling
tests and example as it gave error.
Tried to make monodevelop but it keeps failing with following given
below 

Contents of my GAC are

Mono.Addins, Version=0.3.0.0, Culture=neutral,
PublicKeyToken=0738eb9f132ed756
Mono.Addins.Gui, Version=0.3.0.0, Culture=neutral,
PublicKeyToken=0738eb9f132ed756
Mono.Addins.Setup, Version=0.3.0.0, Culture=neutral,
PublicKeyToken=0738eb9f132ed756

So what is going wrong? 
Any suggestions
Alan

** (/usr/local/lib/mono/2.0/gmcs.exe:23944): WARNING **: The following assembly referenced from /home/alan/Desktop/Monodevelop/monodevelop-1.9.1/build/bin/MonoDevelop.Core.dll could not be loaded:
     Assembly:   Mono.Addins    (assemblyref_index=0)
     Version:    0.3.0.0
     Public Key: 0738eb9f132ed756
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/alan/Desktop/Monodevelop/monodevelop-1.9.1/build/bin/).
** (/usr/local/lib/mono/2.0/gmcs.exe:24398): WARNING **: Could not load file or assembly 'Mono.Addins, Version=0.3.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756' or one of its dependencies.
Exception caught by the compiler while compiling:
   Block that caused the problem begin at: ./MonoDevelop.Components/FileSelector.cs(73,22):
                     Block being compiled: [Internal(1,1):,./MonoDevelop.Components/FileSelector.cs(83,188):]
System.TypeLoadException: Could not load type 'MonoDevelop.Core.FileService' from assembly 'MonoDevelop.Core, Version=1.9.1.0, Culture=neutral, PublicKeyToken=null'.
Internal compiler error at ./MonoDevelop.Components/FileSelector.cs(73,22):: exception caught while emitting MethodBuilder [FileSelector::CommonSetup]

Unhandled Exception: System.TypeLoadException: Could not load type 'MonoDevelop.Core.FileService' from assembly 'MonoDevelop.Core, Version=1.9.1.0, Culture=neutral, PublicKeyToken=null'.
  at (wrapper managed-to-native) System.MonoType:GetMethodsByName (string,System.Reflection.BindingFlags,bool,System.Type)
  at System.MonoType.GetMethods (BindingFlags bindingAttr) [0x00000] 
  at Mono.CSharp.MemberCache.AddMethods (BindingFlags bf, System.Type type) [0x00000] 
  at Mono.CSharp.MemberCache.AddMethods (System.Type type) [0x00000]