I got my 20x4 LCD and I2C adapter. I downloaded the I2C library from here
I opened the "hello world" example from the library folder (.pde)
and when compiling I get this error.
Arduino: 1.6.6 (Windows 7), Board: "Arduino Nano, ATmega328"
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\5' in program
d9;Safari;AE9B8EF6-19E5-4079-8EE4-37865752B4FFUTF-8;134217984
^
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\26' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\7' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\2' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\2' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\16' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\260' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\2' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\16' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\342' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\1' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\36' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\300' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\271' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\16' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\342' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\274' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\2' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\274' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\25' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\365' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\17' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\27' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:229: error: exponent has no digits
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\1' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\1' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\36' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\1' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\1' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\36' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\34' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\36' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\377' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:2: error: stray '\377' in program
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:9: error: 'Mac' does not name a type
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:194: error: expected unqualified-id before numeric constant
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:203: error: 'Safari' does not name a type
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:210: error: 'AE9B8EF6' does not name a type
G:\arduino-1.6.6-windows\arduino-1.6.6\libraries\LiquidCrystal\examples\HelloWorld_i2c\._HelloWorld_i2c.pde:1:252: error: expected unqualified-id before numeric constant
exit status 1
Error compiling.
any ideas?