IMAP Problem

Ok, here is the content from the last crash file (i had more crashes while trying the imap thing). I filled out each field:

<?xml version="1.0" encoding="utf-8"?>
<CrashLog>
<User LogID="0" InstallID="{23883a77-9b81-447b-8263-d24e1a878eeb}" Email="" CountryCode="43" Company="" ChannelName="X1">
<UserDescription />
</User>
<CrashDetails CrashDate="2013-05-28 19:49:58" CrashDateInfo="Utc (Utc offset +02:00)" BuildNumber="5000fg" AppName="X1Pro" AppComponent="X1.exe" MiniDumpFileName="1234abcd-5076-7056-6f94-044652d80ab5">
<Data>
<DataValuePair>System.Object = </DataValuePair>
</Data>
<ErrorMessage>ArgumentNullException: Der Wert darf nicht NULL sein.
Parametername: input</ErrorMessage>
<HelpLink />
<StackTrace> bei System.Text.RegularExpressions.Regex.IsMatch(String input)
bei X1UI.UIControls.X1BrowserDialog.HandleViewModelErrorEvent(Object A_0, X1DialogExViewModelErrorEventArgs A_1)
bei X1UI.Contracts.X1DialogExViewModelBase.RaiseErrorEvent(String message, String caption)
bei X1.ImapPlugin.IMAPAccountsViewModel.d()
bei X1.ImapPlugin.IMAPAccountsViewModel.Button1Clicked()
bei X1UI.UIControls.X1BrowserDialog.button1_Click(Object A_0, RoutedEventArgs A_1)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
bei System.Windows.Controls.Primitives.ButtonBase.OnClick()
bei System.Windows.Controls.Button.OnClick()
bei System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
bei System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
bei System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
bei System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
bei System.Windows.Input.InputManager.ProcessStagingArea()
bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
bei System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
bei System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
bei System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
bei System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
bei MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
bei MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
bei MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)</StackTrace>
<TypedValues>(String)ParamName=input
</TypedValues>
<InnerException />
<CurrentManagedStack>LogCrash at offset 724 in file:line:column &lt;filename unknown&gt;:0:0
a at offset 26 in file:line:column &lt;filename unknown&gt;:0:0
a at offset 33 in file:line:column &lt;filename unknown&gt;:0:0
CatchException at offset 79 in file:line:column &lt;filename unknown&gt;:0:0
CatchExceptionStatic at offset 61 in file:line:column &lt;filename unknown&gt;:0:0
CatchException at offset 107 in file:line:column &lt;filename unknown&gt;:0:0
TryCatchWhen at offset 147 in file:line:column &lt;filename unknown&gt;:0:0
InvokeImpl at offset 180 in file:line:column &lt;filename unknown&gt;:0:0
SubclassWndProc at offset 260 in file:line:column &lt;filename unknown&gt;:0:0
DispatchMessage at offset 0 in file:line:column &lt;filename unknown&gt;:0:0
PushFrameImpl at offset 193 in file:line:column &lt;filename unknown&gt;:0:0
PushFrame at offset 73 in file:line:column &lt;filename unknown&gt;:0:0
ShowHelper at offset 325 in file:line:column &lt;filename unknown&gt;:0:0
Show at offset 92 in file:line:column &lt;filename unknown&gt;:0:0
ShowDialog at offset 713 in file:line:column &lt;filename unknown&gt;:0:0
c at offset 313 in file:line:column &lt;filename unknown&gt;:0:0
NewAccount at offset 362 in file:line:column &lt;filename unknown&gt;:0:0
taccounTypesList_SelectionChanged at offset 71 in file:line:column &lt;filename unknown&gt;:0:0
InvokeEventHandler at offset 52 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 54 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 64 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandlersImpl at offset 430 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEventImpl at offset 121 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEvent at offset 41 in file:line:column &lt;filename unknown&gt;:0:0
OnSelectionChanged at offset 33 in file:line:column &lt;filename unknown&gt;:0:0
InvokeSelectionChanged at offset 79 in file:line:column &lt;filename unknown&gt;:0:0
End at offset 225 in file:line:column &lt;filename unknown&gt;:0:0
SetSelectedHelper at offset 360 in file:line:column &lt;filename unknown&gt;:0:0
NotifyIsSelectedChanged at offset 149 in file:line:column &lt;filename unknown&gt;:0:0
OnSelected at offset 77 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 122 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandlersImpl at offset 430 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEventImpl at offset 121 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEvent at offset 41 in file:line:column &lt;filename unknown&gt;:0:0
OnSelected at offset 5 in file:line:column &lt;filename unknown&gt;:0:0
OnIsSelectedChanged at offset 175 in file:line:column &lt;filename unknown&gt;:0:0
OnPropertyChanged at offset 76 in file:line:column &lt;filename unknown&gt;:0:0
OnPropertyChanged at offset 80 in file:line:column &lt;filename unknown&gt;:0:0
NotifyPropertyChange at offset 60 in file:line:column &lt;filename unknown&gt;:0:0
UpdateEffectiveValue at offset 1827 in file:line:column &lt;filename unknown&gt;:0:0
SetValueCommon at offset 747 in file:line:column &lt;filename unknown&gt;:0:0
SetCurrentValueInternal at offset 53 in file:line:column &lt;filename unknown&gt;:0:0
NotifyListItemClicked at offset 141 in file:line:column &lt;filename unknown&gt;:0:0
HandleMouseButtonDown at offset 76 in file:line:column &lt;filename unknown&gt;:0:0
OnMouseLeftButtonDown at offset 43 in file:line:column &lt;filename unknown&gt;:0:0
OnMouseLeftButtonDownThunk at offset 89 in file:line:column &lt;filename unknown&gt;:0:0
InvokeEventHandler at offset 49 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 54 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 64 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandlersImpl at offset 430 in file:line:column &lt;filename unknown&gt;:0:0
ReRaiseEventAs at offset 272 in file:line:column &lt;filename unknown&gt;:0:0
OnMouseDownThunk at offset 238 in file:line:column &lt;filename unknown&gt;:0:0
InvokeEventHandler at offset 49 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 54 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 64 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandlersImpl at offset 430 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEventImpl at offset 121 in file:line:column &lt;filename unknown&gt;:0:0
RaiseTrustedEvent at offset 65 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEvent at offset 66 in file:line:column &lt;filename unknown&gt;:0:0
ProcessStagingArea at offset 511 in file:line:column &lt;filename unknown&gt;:0:0
ProcessInput at offset 69 in file:line:column &lt;filename unknown&gt;:0:0
ReportInput at offset 98 in file:line:column &lt;filename unknown&gt;:0:0
ReportInput at offset 611 in file:line:column &lt;filename unknown&gt;:0:0
FilterMessage at offset 1133 in file:line:column &lt;filename unknown&gt;:0:0
InputFilterMessage at offset 117 in file:line:column &lt;filename unknown&gt;:0:0
WndProc at offset 190 in file:line:column &lt;filename unknown&gt;:0:0
DispatcherCallbackOperation at offset 125 in file:line:column &lt;filename unknown&gt;:0:0
InternalRealCall at offset 83 in file:line:column &lt;filename unknown&gt;:0:0
TryCatchWhen at offset 66 in file:line:column &lt;filename unknown&gt;:0:0
InvokeImpl at offset 180 in file:line:column &lt;filename unknown&gt;:0:0
SubclassWndProc at offset 260 in file:line:column &lt;filename unknown&gt;:0:0
DispatchMessage at offset 0 in file:line:column &lt;filename unknown&gt;:0:0
PushFrameImpl at offset 193 in file:line:column &lt;filename unknown&gt;:0:0
PushFrame at offset 73 in file:line:column &lt;filename unknown&gt;:0:0
ShowHelper at offset 325 in file:line:column &lt;filename unknown&gt;:0:0
Show at offset 92 in file:line:column &lt;filename unknown&gt;:0:0
ShowDialog at offset 713 in file:line:column &lt;filename unknown&gt;:0:0
m at offset 181 in file:line:column &lt;filename unknown&gt;:0:0
menuAccountSettings_Click at offset 5 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandler at offset 122 in file:line:column &lt;filename unknown&gt;:0:0
InvokeHandlersImpl at offset 430 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEventImpl at offset 121 in file:line:column &lt;filename unknown&gt;:0:0
RaiseEvent at offset 41 in file:line:column &lt;filename unknown&gt;:0:0
InvokeClickAfterRender at offset 89 in file:line:column &lt;filename unknown&gt;:0:0
InternalRealCall at offset 83 in file:line:column &lt;filename unknown&gt;:0:0
TryCatchWhen at offset 66 in file:line:column &lt;filename unknown&gt;:0:0
InvokeImpl at offset 141 in file:line:column &lt;filename unknown&gt;:0:0
InvokeInSecurityContext at offset 56 in file:line:column &lt;filename unknown&gt;:0:0
runTryCode at offset 81 in file:line:column &lt;filename unknown&gt;:0:0
ExecuteCodeWithGuaranteedCleanup at offset 0 in file:line:column &lt;filename unknown&gt;:0:0
RunInternal at offset 106 in file:line:column &lt;filename unknown&gt;:0:0
Run at offset 126 in file:line:column &lt;filename unknown&gt;:0:0
Run at offset 44 in file:line:column &lt;filename unknown&gt;:0:0
Invoke at offset 104 in file:line:column &lt;filename unknown&gt;:0:0
ProcessQueue at offset 350 in file:line:column &lt;filename unknown&gt;:0:0
WndProcHook at offset 99 in file:line:column &lt;filename unknown&gt;:0:0
WndProc at offset 190 in file:line:column &lt;filename unknown&gt;:0:0
DispatcherCallbackOperation at offset 125 in file:line:column &lt;filename unknown&gt;:0:0
InternalRealCall at offset 83 in file:line:column &lt;filename unknown&gt;:0:0
TryCatchWhen at offset 66 in file:line:column &lt;filename unknown&gt;:0:0
InvokeImpl at offset 180 in file:line:column &lt;filename unknown&gt;:0:0
SubclassWndProc at offset 260 in file:line:column &lt;filename unknown&gt;:0:0
DispatchMessage at offset 0 in file:line:column &lt;filename unknown&gt;:0:0
PushFrameImpl at offset 193 in file:line:column &lt;filename unknown&gt;:0:0
PushFrame at offset 73 in file:line:column &lt;filename unknown&gt;:0:0
Run at offset 76 in file:line:column &lt;filename unknown&gt;:0:0
RunDispatcher at offset 23 in file:line:column &lt;filename unknown&gt;:0:0
RunInternal at offset 111 in file:line:column &lt;filename unknown&gt;:0:0
Run at offset 38 in file:line:column &lt;filename unknown&gt;:0:0
Run at offset 27 in file:line:column &lt;filename unknown&gt;:0:0
a at offset 124 in file:line:column &lt;filename unknown&gt;:0:0
Main at offset 940 in file:line:column &lt;filename unknown&gt;:0:0
</CurrentManagedStack>
</CrashDetails>
<ComputerDetails>
<OS CodeSet="1252" OSLanguage="1031" PAEEnabled="" IsPrimaryOS="True" OperatingSystemSKU="48" OSProductSuite="256" ProductType="1" OtherTypeDescription="" MaxProcessMemorySize="8589934464">
<DetailedOSDescription>6.1.7601.65536, Service Pack 1, Win32NT</DetailedOSDescription>
<BootDevice>\Device\HarddiskVolume1</BootDevice>
<SystemDevice>\Device\HarddiskVolume2</SystemDevice>
<SystemDirectory>C:\Windows\system32</SystemDirectory>
<WindowsDirectory>C:\Windows</WindowsDirectory>
</OS>
<LastBootUpTime>0.05</LastBootUpTime>
<CPU>Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz - Intel64 Family 6 Model 42 Stepping 7</CPU>
<VirtualMem>Free: 3084532kb of 4193264kb</VirtualMem>
<PhysicalMem>Free: 1315312kb of 2096632kb</PhysicalMem>
<PageFileMem>Free: 2096632kb of 2096632kb</PageFileMem>
<HDDs>
<LogicalHardDrive Name="C:" Free="49658466304" Size="64317550592" />
</HDDs>
<OutlookVersion />
<MapiVersion />
<FirefoxVersion />
<DotNetVersions>
<DotNetVerion>2.0.50727.5420</DotNetVerion>
<DotNetVerion>3.0.30729.5420</DotNetVerion>
<DotNetVerion>3.5.30729.5420</DotNetVerion>
<DotNetVerion>4.0.30319</DotNetVerion>
</DotNetVersions>
</ComputerDetails>
</CrashLog>

I hope, it helps finding the problem.

---