Hi:  I am using an arduino uno and have installed atmel studio 6, version 6.2.x.  I can build and upload the basic blink sketch, just fine. My problem is that I have an arduino sketch that uses an LCD with I2c.  Here is a link to the library. https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads/LiquidCrystal_V1.2... My sketch has the following error, when I try to build it: Error creating .elf.  Based on what I read here, "Thanks, there used to be some code to handle that. maybe it is missing or maybe ignoring dashes." http://www.visualmicro.com/forums/YaBB.pl?num=1405331521/4 . I wonder if the problem is the inclusion of _ in the names of some folders, files, and variables?  I began to go through and change the names, but there are a lot of them with an _ in them. ( See attachment).  Instead, to try to test this, I removed the LCD I2C library and any LCD.print statements from my sketch.  I was now able to build and upload the sketch.
Thank you for your wonderful work.  
Steve

I tried building sainlcdtest.ino, the example that comes with LiquidCrystal_I2C and got the same error: "Error creating .elf."  The attachment has the .ino file.

Here is the entire build message:

Compiling 'sainlcdtest' for 'Arduino Uno'
LCD.cpp.o:In function `LCD'
LCD.cpp:LCD()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:49: first defined here
LCD.cpp.o:In function `LCD'
LCD.cpp:LCD()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:49: first defined here
LCD.cpp.o:In function `LCD::backlight()'
LCD.cpp:backlight()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:301: first defined here
LCD.cpp.o:In function `LCD::noBacklight()'
LCD.cpp:noBacklight()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:308: first defined here
LCD.cpp.o:In function `LCD::command(unsigned char)'
LCD.cpp:command(unsigned char)'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:331: first defined here
LCD.cpp.o:In function `LCD::noAutoscroll()'
LCD.cpp:noAutoscroll()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:278: first defined here
LCD.cpp.o:In function `LCD::autoscroll()'
LCD.cpp:autoscroll()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:271: first defined here
LCD.cpp.o:In function `LCD::moveCursorLeft()'
LCD.cpp:moveCursorLeft()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:266: first defined here
LCD.cpp.o:In function `LCD::moveCursorRight()'
LCD.cpp:moveCursorRight()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:260: first defined here
LCD.cpp.o:In function `LCD::rightToLeft()'
LCD.cpp:rightToLeft()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:251: first defined here
LCD.cpp.o:In function `LCD::leftToRight()'
LCD.cpp:leftToRight()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:244: first defined here
LCD.cpp.o:In function `LCD::scrollDisplayRight()'
LCD.cpp:scrollDisplayRight()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:240: first defined here
LCD.cpp.o:In function `LCD::scrollDisplayLeft()'
LCD.cpp:scrollDisplayLeft()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:235: first defined here
LCD.cpp.o:In function `LCD::blink()'
LCD.cpp:blink()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:226: first defined here
LCD.cpp.o:In function `LCD::noBlink()'
LCD.cpp:noBlink()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:220: first defined here
LCD.cpp.o:In function `LCD::cursor()'
LCD.cpp:cursor()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:213: first defined here
LCD.cpp.o:In function `LCD::noCursor()'
LCD.cpp:noCursor()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:208: first defined here
LCD.cpp.o:In function `LCD::display()'
LCD.cpp:display()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:201: first defined here
LCD.cpp.o:In function `LCD:n()'
LCD.cpp:on()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:315: first defined here
LCD.cpp.o:In function `LCD::noDisplay()'
LCD.cpp:noDisplay()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:195: first defined here
LCD.cpp.o:In function `LCD:ff()'
LCD.cpp:off()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:323: first defined here
LCD.cpp.o:In function `LCD::setCursor(unsigned char, unsigned char)'
LCD.cpp:setCursor(unsigned char, unsigned char)'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:171: first defined here
LCD.cpp.o:In function `LCD::write(unsigned char)'
LCD.cpp:write(unsigned char)'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:342: first defined here
LCD.cpp.o:In function `LCD::createChar(unsigned char, unsigned char*)'
LCD.cpp:createChar(unsigned char, unsigned char*)'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:285: first defined here
LCD.cpp.o:In function `LCD::home()'
LCD.cpp:home()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:167: first defined here
LCD.cpp.o:In function `LCD::clear()'
LCD.cpp:clear()'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:161: first defined here
LCD.cpp.o:In function `LCD::begin(unsigned char, unsigned char, unsigned char)'
LCD.cpp:begin(unsigned char, unsigned char, unsigned char)'
LCD.cpp.o:C:\Program Files (x86)\Arduino\libraries\LCD\LCD.cpp:76: first defined here
Error creating .elf

Thanks,
Steve

Hello:

My sketch is in: C:\Users\se\Documents\Arduino\examples\LiquidCrystal_I2C\sainlcdtest

My library is in: C:\Program Files (x86)\Arduino\libraries\LiquidCrystal_I2C

The library is here: https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads
And I am using: LiquidCrystal_V1.2.1.zip

The sketch/example is based on the one here: https://bitbucket.org/celem/sainsmart-i2c-lcd/src/3adf8e0d2443/sainlcdtest.ino

Here is my modified sketch that still gives the .elf error.
//////////////////////////
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
///////////////////////
#define I2C_ADDR    0x3F  // Define I2C Address where the PCF8574A is
#define BACKLIGHT_PIN     3
#define En_pin  2
#define Rw_pin  1
#define Rs_pin  0
#define D4_pin  4
#define D5_pin  5
#define D6_pin  6
#define D7_pin  7
int n = 1;
LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void setup()
{
//  lcd.begin (20,4);  
  lcd.begin (16,2);  
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH);
  //lcd.home ();                   // go home
  //lcd.print("1234567890123456");  
  lcd.setCursor ( 0, 1 );        // go to the 2nd line
  lcd.print("abcdefghijklmnoqprst");
  lcd.setCursor ( 0, 2 );        // go to the third line
  lcd.print("1234567890123456");
}

void loop()
{
  lcd.setCursor (1,0);        
  lcd.print(n++,DEC);
//  lcd.setCursor (1,1);        
//  lcd.print("st");  
  delay(50);
}

Thank you so much, Steve

It works now with this which is just great!

#include <LiquidCrystal_I2C/LiquidCrystal_I2C.h>
#include <LiquidCrystal_I2C/LCD.h>

Thanks.  

Now,  the following is not printing to the LCD, even though printString1 and 2 have the right stuff in them.

  // print to LCD
  lcd.setCursor (0,0);  // first row
  lcd.print(printString1);
  lcd.setCursor (0,1);  // second row
  lcd.print(printString2);  

Is there anyway to use visual micro to figure out why the above is not printing?  Is there a way to check memory or SRAM usage.  I have seen stuff written about Serial.print using too much memory?

Thank you,
Steve