ikvmstub System.Web.dll Null pointer Exception

When you execute "ikvmstub System.Web.dll" you get the
following.

java.lang.NullPointerException
at cli.System.Collections.Hashtable.ContainsKey
(Unknown Source)
at cli.DotNetTypeWrapper.GetBaseTypeWrapper
(Unknown Source)
at
cli.ClassLoaderWrapper.GetWrapperFromBootstrapType
(Unknown Source)
at cli.ClassLoaderWrapper.GetWrapperFromType
(Unknown Source)
at
cli.CompiledTypeWrapper.GetNameSigFromMethodBase
(Unknown Source)
at cli.CompiledTypeWrapper.LazyPublishMembers
(Unknown Source)
at cli.TypeWrapper.GetMethods (Unknown Source)
at
cli.IKVM.NativeCode.java.lang.VMClass.GetDeclaredMethods
(Unknown Sou
rce)
at java.lang.VMClass.getDeclaredConstructors
(VMClass.java:145)
at java.lang.Class.getDeclaredConstructors
(Class.java:416)
at cli.NetExp.ProcessClass (Unknown Source)
at cli.NetExp.ProcessClass (Unknown Source)
at cli.NetExp.ProcessAssembly (Unknown Source)
at cli.NetExp.Main (Unknown Source)
at cli.NetExp.Main (Unknown Source)