Hello,
Since this latest update i am unable to compile any of my programs anymore.
It claims for all prototypes. I never defined prototypes before and it compiled always without problem.
If i define the prototypes i have strange behavior concerning this lines in the code. There are some errors and when i delete some comments  i have other errors ? ( buffer overflow ? )

when i try to install this i recieve folowing error --> see attached file

19-Mar-20 13:10:55 - Microsoft VSIX Installer
19-Mar-20 13:10:55 - -------------------------------------------
19-Mar-20 13:10:55 - Initializing Install...
19-Mar-20 13:10:55 - Extension Details...
19-Mar-20 13:10:55 -      Identifier      : c2b94433-1774-4242-8062-987a4484f1ed
19-Mar-20 13:10:55 -      Name            : Arduino IDE for Visual Studio (Visual Micro)
19-Mar-20 13:10:55 -      Author          : Visual Micro
19-Mar-20 13:10:55 -      Version         : 2020.318.0
19-Mar-20 13:10:55 -      Description     : A fully compatible Arduino Edit, Build , Deploy and Debug tool. All Arduino IDE versions are supported. This is an admin install for all users. (optional Arduino debugger and more!). Supports Arduino and all clones (AVR, SAMD, ESP, STM32, Intel, Ti etc.). Supports Hadrware/GDB and Serial debugging of mulitple .ino, cpp files, libraries and core. Teams can split code into shared projects.

NOTE: This extension is upated frequently, please switch off auto-update via 'tools>extensions and updates' if the update prompt annoys you. 

Latest release provides a number of fixes and additions. Please see the 'Release Notes' at www.visualmicro.com

Visual Micro supports many different types of hardware and code libraries. These can be installed manually or using the automated installation tools provided by this extension.
19-Mar-20 13:10:55 -      Locale          : en-US
19-Mar-20 13:10:55 -      MoreInfoURL     : https://www.visualmicro.com/
19-Mar-20 13:10:55 -      InstalledByMSI  : False
19-Mar-20 13:10:55 -      SupportedFrameworkVersionRange : [0.0,2147483647.2147483647]
19-Mar-20 13:10:55 - 
19-Mar-20 13:10:55 -      Supported Products : 
19-Mar-20 13:10:55 -            Microsoft.VisualStudio.Pro
19-Mar-20 13:10:55 -                  Version : [15.0.27220,16.99)
19-Mar-20 13:10:55 -            Microsoft.VisualStudio.Community
19-Mar-20 13:10:55 -                  Version : [15.0.27220,16.99)
19-Mar-20 13:10:55 -            Microsoft.VisualStudio.Enterprise
19-Mar-20 13:10:55 -                  Version : [15.0.27220,16.99)
19-Mar-20 13:10:55 - 
19-Mar-20 13:10:55 -      References      : 
19-Mar-20 13:10:55 - 
19-Mar-20 13:10:55 - Searching for applicable products...
19-Mar-20 13:10:55 - Found installed product - Global Location
19-Mar-20 13:10:55 - Found installed product - AtmelStudio
19-Mar-20 13:10:55 - VSIXInstaller.NoApplicableSKUsException: This extension is not installable on any currently installed products.
   at VSIXInstaller.App.InitializeInstall(Boolean isRepairSupported)
   at VSIXInstaller.App.InitializeInstall()
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()

i am unable to install this latest version into visual studio 2007 community version 15.9.21 
I tried to install the atmel version on atmel studio and there everything works again as expected

I have the same compile problems.  I am not sure what to do.  I have used visual micro for years never had compile problems that I could not resolve myself. I tried reverting to an older version and I still can not compile.

The extension has been posted to the gallery so "extensions>extensions manager" will now offer an update and will use the correct installer.