In a program for an Arduino Uno I have this included (I use Visual Micro studio)

#include <Wire.h>
#include <LiquidCrystal_SR3W.h>
#include <LiquidCrystal_SR2W.h>
#include <LiquidCrystal_SR.h>
#include <LiquidCrystal_I2C.h>
#include <LCD.h>
#include <I2CIO.h>
#include <FastIO.h>
 

And it complies without problem.
When trying this program on a Arduino Duo I have exactly the same include lines as above and I have included them from the Add Library menu and it result in this compiler error message

Compiling debug version of 'DueMottagare' for 'Arduino Due (Programming Port)'
I2CIO.cpp:35:26: fatal error: ..\Wire\Wire.h: No such file or directory
:#include <..\Wire\Wire.h>
:compilation terminated
Error compiling libraries

Strange thing is that it has compiled before I think. I'm without a clue to what the problem is. The two projects are in the same root folder where I also have a directory folder called libraries with the user libraries

Tim@Visual Micro wrote on Aug 14^th, 2016 at 5:51pm:


Here is a link to the website for the libraries I'm trying to use
https://arduino-info.wikispaces.com/LCD-Blue-I2C

I tried removing the ..\Wire" from I2CIO.cpp but that generated other compiler errors. The line seem to be needed

Tim@Visual Micro wrote on Aug 14^th, 2016 at 6:15pm:


Tried now and the result was this compiler error

Compiling debug version of 'DueMottagare' for 'Arduino Due (Programming Port)'
Unknown error during deep search source code for includes. Attempting alternative regex exploration
System.Exception: Multiple attempts were made to resolve the same include path
   at UntilDone(String sourceFilePath, Board brd, List`1 includePaths)
   at UntilDone(String sourceFilePath, Board brd, List`1 includePaths)
   at ntilDone(String sourceFilePath, Board brd, List`1 includePaths)
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino._compile(SketchBuilder lsketch, String primaryClassName, Boolean verbose, Boolean isDebug)
I2CIO.cpp:35:23: fatal error: Wire\Wire.h: No such file or directory
:#include <Wire\Wire.h>
:compilation terminated
Error compiling libraries

Tim@Visual Micro wrote on Aug 14^th, 2016 at 7:30pm:


Now I was able to compile but encounter this weird error for the upload

Compiling debug version of 'DueMottagare' for 'Arduino Due (Programming Port)'
Binary sketch size: 27 732 bytes (used 5% of a 524 288 byte maximum) (4,07 secs)
 
Uploading to I/O board using 'COM3'
Upload failed
bossac.exe: extra arguments found
Try 'bossac.exe -h' or 'bossac.exe --help' for more information

Tim@Visual Micro wrote on Aug 15^th, 2016 at 1:36pm:


Under Options Visual Micro versions I see this info

Version 1.1601.11
Version minor 3

Visual Micro now supports Segger debug of the Due in Atmel Studio

Notice we can use .cpp instead of .ino files. The .cpp must contain the same code as the master .ino (setup() loop() and #include "Arduino.h". 

A project_name.ino must exist in the project but it can be empty and is not compiled when a .cpp exists