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Unable to retrieve type info error when loading Ninja

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    Unable to retrieve type info error when loading Ninja

    I'm getting this after adding a DLL to Ninja8:

    Time Category Message
    7/23/2018 6:43:28 AM Default Unable to retrieve type info for 'NinjaTrader.NinjaScript.AddOnBase' from assembly 'Twilio': Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

    Thing is that I have added Twilio's references and it compiles just fine in both NinjaTrader as as well as VisualStudio.

    The one reference I have not added is Newtonsoft.Json.dll which also used to be part of Ninja7 (or at least was tolerated) but now causes compile conflicts (I think some overlapping definitions) in Ninja8.

    It's possible that Newtonsoft is the culprit here, but the code works - I tested it. Can't get rid of that error message on load however. Please advise.

    #2
    Hello molecool,

    Thanks for your post.

    This error is typically seen when there is a missing reference. The Newtonsoft.Json.dll package you mention may be involved.

    You may wish to make sure that you have .NET 4.5 compatible DLL's and you may wish to confirm that all necessary packages are included.

    I've included links to 2 threads that may provide further direction for troubleshooting.

    Importing Newton.Json - https://ninjatrader.com/support/foru...d.php?t=108382

    LoaderExceptions verifying references - https://ninjatrader.com/support/foru...ad.php?t=85453

    Please let us know if there is anything else we can do to help.
    JimNinjaTrader Customer Service

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      #3
      Okay, here's an update:

      Turns out that I had the wrong Newtonsoft.Json.dll and that's what Ninja was complaining about. It was an older version I think got copied over from Ninja7. But the one that Twilio needs apparently was a different one. I copied that one over and now it's launching fine

      So the trick is to put Newtonsoft.Json.dll into the Custom folder but not to add it to the references in the Ninja editor. If I do that I get a compile error in NinjaTrader.NinjaScript.DrawingTools.PriceLevels, some overlapping function call.
      Last edited by molecool; 07-23-2018, 10:11 AM.

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