Having trouble compiling and uploading...java error?

Ok, just got my Arduino Uno R3 and have it hooked up via USB to my MacBook pro. Downloaded the 1.0.5 IDE and opened it on my Mac. Selected the Arduino Uno as the board and USB /dev/tty.usbmodemfd121 as the serial port. Then i opened the "Blink" example and clicked "upload." It starts and then i get an error at the bottom in oranage that states "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avr-objcopy returned 139" I get the same error If I click compile and not upload. Not sure what to try?

Nevermind...I used the beta version of the IDE and it worked fine.