1st time trying arduino. running ubuntu 12.04 with mega2560. when I try to verify examples such as blink in sketch, I get (cannot run prog "avr-g++" java.io.IOEXCEPTION; error=2 no such file or directory. also sometimes serial port will show up properly, sometimes it won't. i am totally confused.

cannot run examples

cmiyc May 22, 2012, 2:21am 2

Did you download Arduino IDE from Arduino.cc or did you install from the Ubuntu package manager?

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