Fixed error where if user did not scan for comports, the extension would later crash and take atmel studio down with it.

There is also another error, which goes away if tool window is reloaded by why it comes, I dont know.

Snapshots attached.!

Tested the VSIX package on a few systems, works, but the extension folder inside the atmel studio folder is named randomly, so need to figure that out programmatically at runtime.

Also, Post-Build will NOT work.