could not load file or assembly

edited May 2012
hello to everybody. I am new here and i am just learning the program and there seems to be a problem. When i am trying to execute something there is this message in my screen:

Could not load file or assembly 'Microsoft.ComplexEventProcessing.Observable, Version=, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified.

I tried to look it up but i couldn't find something helpful. I was just wondering if anybody could help it out with this.


  • Are you using the StreamInsight driver? If so, make sure you have the right version of StreamInsight installed.

    If you're not using StreamInsight, press F4 (query properties). Is there anything in additional references? Clear it out and press "Set as default for new queries".
  • yes i am using Streaminsight driver i think. I read in msdn that for my situation i have to add a reference to Microsoft.ComplexEventProcessing.Observable.dll. But i can't find in the references available while pressing F4. Any suggestion?
  • In that case you'll have click 'Browse' and locate the DLL after pressing F4.

    LINQPad uses much the same logic as Visual Studio when adding references. If a DLL is not in the standard reference locations, you'll have to browse to it.
  • yes, you know this is my problem. Even when clicking 'browse' there is no DLL to locate. I am just wondering if it is my failure that there is no .dll to browse in my files. Is it possible that i've missed a step in installation?
  • Maybe. I would try reinstalling StreamInsight - or posting a message here if you have no success:
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