Everything worked fine before, but since upgrading to 1.6.3 I always get the following error(s):
Couldn't determine program size: /home/xxxxx/arduino/hardware/tools/avr/bin/avr-size: '/tmp/build5063569465113905799.tmp/Blink.cpp.elf': No such file avrdude: can't open input file /tmp/build5063569465113905799.tmp/Blink.cpp.hex: No such file or directory avrdude: read from file '/tmp/build5063569465113905799.tmp/Blink.cpp.hex' failed
It doesn't matter if I just verify or try to upload (to a Arduino Uno in this case). Every sketch produces the same result.
I also tried the latest nightly build.
On my Windows machine 1.6.3 works fine.
System: Ubuntu 14.04 LTS x64