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I received the warning after reinstalling all of my software (Lightning hit at the home that killed my PC during a build!)
I had no idea what the error message was telling me.
So after a few hours getting nowhere I “Read the instructions”
Step 2
◦Uninstall any currently installed NETMF SDKs.
◦ Download Microsoft .NET Micro Framework 4.3 (QFE2) and unzip the file. Open the file’s folder and…
Install MicroFrameworkSDK.MSI
Install netmfvs2013.vsix
Yes… I ‘SORT OF’ read the instructions… More than several times… but …
I kept overlooking >> Install netmfvs2013.vsix
Everything worked using VS2013 Pro except I could not create a .NET Micro project…
Thought I would pass it on to anyone that reads like I do!