title: CallbackOnCollectedDelegate was detected on Walther MFS100 Check Scanner
body: <p>i am trying to programming an interface for Walther Mfs100 Check scanner but after the scan i get "CallbackOnCollectedDelegate was detected" error. How can i fix this. I use .net 2.0 with c# </p>
  
  <pre><code>[DllImport("mflib.dll.stdcall")]
          public static extern int mfScanFeeder(int mode, int font, int timeout);
  
   retval = modMFS100.mfScanFeeder(0, 2,5000);
  </code></pre>