Hello everyone.
First post but long time licensed VisualMicro user. Great tool.

Just updated my VM extension (Visual Studio Community 2015 here) and now I can't open/create Arduino projects anymore. Worked fine before the last update.

Visual Studio 2015 in itself works fine (I can create/open Windows C++ projects just fine).

Reported error is:

Error during processing of the command. Please review or post the stack trace in the www.visualmicro.com forumObject reference not set to an instance of an object. (Visual.Micro.Visual.Studio.Arduino.Helper.SolutionOpenArduinoSketch)
System.NullReferenceException: Object reference not set to an instance of an object.
   at Visual.Micro.MiroAppAPI.SketchUtils.OpenSketchFilePicker(MCUApplication mcuApp)
   at Visual.Micro.Visual.Studio.Arduino.AddInApp.ExecCmd(String commandName)
 

Visual Micro version:
1903.18.1

Operating system is:
Windows 10 Pro (64 bit)
Version 1809
Build 17763.529

Visual Studio is:
Visual Studio Community 2015
Version 14.0.2543101 Update 3

Things I tried:
Close/reopen Visual Studio
Restart the PC
Unistall/reinstall Visual Micro

Nothing worked. 

What could I try? Is there a previous version of VM available?

Thanks

1) Yes all VM-related menus are showing ok

I already stated what you asked:
2) Yes but only non-Arduino projects
3) Yes but only non-Arduino projects
4) Yes, VS Community 2015, so I downloaded the appropriate 2012-2015 version of VM extension

File->Open->Project->Arduino Project does not work
File->New->Project->Arduino Project does not work

Used to work with the previous VM version.

All other project types work (C++ etc.)

I always opened existing Arduino projects (even if created with VM) via File->Open->Arduino Project.

Never tried (not even with previous VM versions) to open an Arduino project another way, so not sure what you are asking.

Thanks for the info.

A point to note that might save you some time. When you have opened an arduino .ino the first time then visual micro creates a c++ project file for you (vcxproj). This is a standard Visual Studio project which Visual Micro will open on future occasions using "file>open>arduino project".

When you subsequently use File>Open>Project or any of the standard VS open commands you will be able to navigate to where your arduino project is and open the project. Then visual studio will put the project on the "File>Recent>Project/Solutions" menu. It gives you one click access to your project, arduino projects are no different from a c++ project.

To create a new project don;t you use "file>new>project>c++>arduino project"?


ps: you should upgrade to vs2017 community. The visual micro version for 2012-2015 is now obsolete on a slow updates cycle if any. 2017 is better than 2015 anyway.

Yes not idea why the open doesn't work. There haven't been other reports and it works okay for me in 2012-2015. It's a simple function that opens the standard windows file dialog. The only thing that has changed is the .net version we build for.

The open really isn't required unless you are opening an arduino .ino for the first time in which case file>open>file does the same thing. 

We will try to add some more diagnostics for the next release

Oh I see that is useful thanks. Which IDE and board do you have selected on the vMicro menu or toolbar?

What I am looking for is if you reinstall also required you to setup your arduino ide location again and if the setup dialog was failing to appear with the newer version. Now that you have run the older version did the setup dialog appear? Was it empty and you had to reapply the location of the arduino ide? Maybe waste of your time but if you now go back to the newer release do things work okay? and if not the n which ide is selected (arduino 1.6 etc)?

With the old version (even if reinstalled after trying the new one), the correct IDE version appears in the box, without having to open the IDE setup dialog again.
Hope this helps.

+ if you can give me a list of the board package json files you have installed that would be useful. There is a list on the IDE locations dialog in Visual Micro and also maybe some you have added to File>Preferences in the Arduino IDE

Thanks

Thanks, please also confirm what folder names you have, if any, below myDocuments\Arduino\Hardware

Also confirm the version of teensy and the arduino ide version

Thanks