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Deployment Errors Issue

Deplyoment Errors Netduino Plus 2 Device not found cannot be opened

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#1 nathantr3


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Posted 08 July 2014 - 08:09 PM

I'm a first time user of netduino, using a netduino plus 2 board. I have followed these instructions:  


Please install in the following order:


  1 Microsoft Visual C# Express 2010

  2 .NET Micro Framework SDK v4.2

  3 Netduino SDK v4.2.2.0 (32-bit) or

Netduino SDK v4.2.2.0 (64-bit)



and then written a simple code to make the LED blink. I changed the setting in the projects properties tab to deploy to the board instead of the emulator, but when I click "Start Debugging" it pauses for a couple seconds and then displays, "There were deployment errors. Continue?"

             If I click "No" it just ends the build process and the error log says, "Device not found or cannot be opened - USB:Netduino".

             If I click "Yes" another box pops up that says, "TinyCLR Error: An exception occurred while attempting to launch the debugger: Object reference not set to an instance of an object." and then "The operation could not e completed. Unspecified error." And the error list still says the say error of "Device not found or cannot be opened - USB:Netduino"


I've done these steps: http://forums.netdui...-v422-update-2/ (except for the last step about updating network settings because I don't know what to do there, could that be my problem?) which allowed me to load my simple program once, but then the same errors happened if I tried to overwrite that program with a modified program (ie. changing the duration of the led blink).


I'm stuck, confused, and obviously new at this! Any help would be very appreciated!




#2 Frode


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Posted 10 July 2014 - 05:34 AM

Hi, can you show us the code you've written for blinking the led? I suspect that is where the problem is.

#3 Chris Walker

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Posted 11 July 2014 - 12:49 AM

Hi Nate,

Open up Netduino Update.

Push the button on your Netduino Plus 2 while powering it up via USB (to put it into bootloader mode).

When it appears in Netduino Update, click on "settings" for your Netduino Plus 2.

Go to the Tools tab and click "erase app".

Does this bring your Netduino back to life for you, so you can deploy a new app?


P.S. It looks like you're using the 4.2 firmware; have you considered using VS2012 and 4.3 instead?


Also tagged with one or more of these keywords: Deplyoment, Errors, Netduino Plus 2, Device not found, cannot be opened

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