ironpython + MasterEmulator.dll = error: Could not load file or assembly &#39;Microsoft.Dynamic, Version=1.1.0.20https://devzone.nordicsemi.com/f/nordic-q-a/16973/ironpython-masteremulator-dll-error-could-not-load-file-or-assembly-microsoft-dynamic-version-1-1-0-20Hello when I tried to use IronPython with MasterEmulator.dll in example as described in documentation. I got following error: c:\Program Files (x86)\IronPython 2.7&gt;ipy d:\Data\vbe\0Project\orygami\tests\20161010_test_c_sharp_api\tstPy.py Tracebacken-USTelligent Community 13Tue, 11 Oct 2016 14:17:28 GMTRE: ironpython + MasterEmulator.dll = error: Could not load file or assembly 'Microsoft.Dynamic, Version=1.1.0.20https://devzone.nordicsemi.com/thread/65109?ContentTypeID=1Tue, 11 Oct 2016 14:17:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a0c3a01-c19f-4092-be52-3a3012b566d2FormerMember<p>I don&#39;t think that the master emulator dll will be updated.</p> <p>For making serialized PC applications that use the nRF51-Dongle or the nRF51/52-DK, <a href="https://github.com/NordicSemiconductor/pc-ble-driver">the pc-ble-driver on github</a> replaces the master emulator API.</p><div style="clear:both;"></div>RE: ironpython + MasterEmulator.dll = error: Could not load file or assembly 'Microsoft.Dynamic, Version=1.1.0.20https://devzone.nordicsemi.com/thread/65108?ContentTypeID=1Mon, 10 Oct 2016 17:21:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9191ef1a-d595-4142-91b9-05fc90c8609cvit bernatik<p>I managed to solve it by uninstalling new IronPython 2.7.6.3 and installing old python from Dec 2014 version: 2.7.5.</p> <p>But it is not ideal solution. Are you going to update dll to support latest IronPython? Or is there a way how to run the dll in new IronPython?</p><div style="clear:both;"></div>