I tried 1.5.7 and 1.6.0 I get this:
Arduino: 1.6.0 (Windows , Board: "Arduino Uno"
Sketch uses 31,474 bytes (97%) of program storage space. Maximum is 32,256 bytes.
Global variables use 1,781 bytes (86%) of dynamic memory, leaving 267 bytes for local variables. Maximum is 2,048 bytes.
Low memory available, stability problems may occur.
avrdude: ser_open(): can't open device "\\.\COM1": The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.
Arduino: 1.6.0 (Windows , Board: "Arduino Uno"
Sketch uses 31,474 bytes (97%) of program storage space. Maximum is 32,256 bytes.
Global variables use 1,781 bytes (86%) of dynamic memory, leaving 267 bytes for local variables. Maximum is 2,048 bytes.
Low memory available, stability problems may occur.
avrdude: ser_open(): can't open device "\\.\COM1": The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.