Stacktrace for command call

[INFO] Connecting with irc.esper.net:6667...
[INFO] Connected successful.
[INFO] Command is +
[INFO] Command is /
[INFO] Args are: 1ÿ0
[WARNING] [EXCEPTION]NotFiniteNumberException:Divison by 0
[INFO]    bei System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   bei System.Environment.get_StackTrace()
   bei Stiepen.app.Kibisharp.cmd_div.run(String[] param) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\BasicKibiLispCommands.cs:Zeile 130.
   bei Stiepen.app.Kibisharp.KibiLisp.Parser.parseCmd() in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 153.
   bei Stiepen.app.Kibisharp.KibiLisp.Parser.parseData(String[] returnchar) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 112.
   bei Stiepen.app.Kibisharp.KibiLisp.Parser.parseCmd() in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 148.
   bei Stiepen.app.Kibisharp.KibiLisp.Parser.parseData(String[] returnchar) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 112.
   bei Stiepen.app.Kibisharp.KibiLisp.Parser.run() in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 91.
   bei Stiepen.app.Kibisharp.KibiLisp.KibiLisp.executeString(String s, Hashtable env) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\KibiLispCommand.cs:Zeile 52.
   bei Stiepen.app.Kibisharp.cmd_kibilisp.run(String param, String[] args) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\BasicCommands.cs:Zeile 201.
   bei Stiepen.app.Kibisharp.MessageHandlers.OnChanMessage(Object sender, IrcEventArgs ircdata) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\MessageHandlers.cs:Zeile 86.
   bei Meebey.SmartIrc4net.IrcClient._Event_PRIVMSG(IrcMessageData ircdata) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcClient.cs:Zeile 1939.
   bei Meebey.SmartIrc4net.IrcClient._HandleEvents(IrcMessageData ircdata) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcClient.cs:Zeile 1237.
   bei Meebey.SmartIrc4net.IrcClient._Worker(Object sender, ReadLineEventArgs e) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcClient.cs:Zeile 928.
   bei Meebey.SmartIrc4net.ReadLineEventHandler.Invoke(Object sender, ReadLineEventArgs e)
   bei Meebey.SmartIrc4net.IrcConnection.ReadLine(Boolean blocking) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcConnection.cs:Zeile 681.
   bei Meebey.SmartIrc4net.IrcConnection.Listen(Boolean blocking) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcConnection.cs:Zeile 620.
   bei Meebey.SmartIrc4net.IrcConnection.Listen() in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\SmartIrc4net_compile\SmartIrc4net_compile\IrcConnection.cs:Zeile 634.
   bei Stiepen.app.Kibisharp.Program.Main(String[] args) in D:\Users\Stephan\Documents\Visual Studio 2010\Projects\Kibisharp\Kibisharp\Program.cs:Zeile 101.
   bei System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   bei System.Threading.ThreadHelper.ThreadStart()
[INFO] return is null
[INFO] Args are: nullÿ1
[INFO] return is null
[ERROR] [EXCEPTION]NullReferenceException:Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.