I am currently using v 0.85 rc3. I had previously tried with v 0.84 with no luck.
[license] Loading assemblies ...
[license] C:\Projects\Nant_Builds\latest\release\Interop.AxSHDocVw.dll (loaded) [license] C:\Projects\Nant_Builds\latest\release\Interop.SHDocVw.dll (loaded) [license] c:\Program Files\Infragistics\NetAdvantage 2005 Volume 1\Windows Forms\Bin\Infragistics.Shared.v5.1.dll (loaded) [license] c:\Program Files\Infragistics\NetAdvantage 2005 Volume 1\Windows Forms\Bin\Infragistics.Win.Misc.v5.1.dll (loaded) [license] c:\Program Files\Infragistics\NetAdvantage 2005 Volume 1\Windows Forms\Bin\Infragistics.Win.UltraWinToolbars.v5.1.dll (loaded) [license] c:\Program Files\Infragistics\NetAdvantage 2005 Volume 1\Windows Forms\Bin\Infragistics.Win.UltraWinTree.v5.1.dll (loaded) [license] c:\Program Files\Infragistics\NetAdvantage 2005 Volume 1\Windows Forms\Bin\Infragistics.Win.v5.1.dll (loaded) BUILD FAILED INTERNAL ERROR System.IO.FileLoadException: Assembly infragistics.shared.v5.1.dll already loaded without additional security evidence. File name: "infragistics.shared.v5.1.dll" Server stack trace: at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Boolean isStringized, Evidence assemblySecurity, Boolean throwOnFileNotFound, Assembly locationHint, StackCrawlMark& stackMark) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Boolean stringized, Evidence assemblySecurity, StackCrawlMark& stackMark) at System.Reflection.Assembly.LoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm) at NAnt.DotNet.Tasks.LicenseGatherer.CreateLicenseFile(LicenseTask licenseTask, String licenseFile) at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(MethodBase mb, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at NAnt.DotNet.Tasks.LicenseGatherer.CreateLicenseFile(LicenseTask licenseTask, String licenseFile) at NAnt.DotNet.Tasks.LicenseTask.ExecuteTask() at NAnt.Core.Task.Execute() at NAnt.VSNet.Resource.CompileLicx() at NAnt.VSNet.Resource.Compile(ConfigurationSettings configurationSettings, Boolean showCommands) at NAnt.VSNet.Project.Compile(String configuration, ArrayList alCSCArguments, String strLogFile, Boolean bVerbose, Boolean bShowCommands) at NAnt.VSNet.Solution.Compile(String configuration, ArrayList compilerArguments, String logFile, Boolean verbose, Boolean showCommands) at NAnt.VSNet.Tasks.SolutionTask.ExecuteTask() at NAnt.Core.Task.Execute() at NAnt.Core.Target.Execute() at NAnt.Core.Project.Execute(String targetName, Boolean forceDependencies) at NAnt.Core.Project.Execute() at NAnt.Core.Project.Run() Please send bug report to [EMAIL PROTECTED] Total time: 4.5 seconds.