I have Quartus 12 running on a 64-bit laptop. For some reason it installed the 32-bit version instead of the 64-bit version. I have a Cyclone II development board turned on in program mode and connected to the USB port, and I brought up the programmer window. I bring up the Hardware Setup window and hit Add Hardware. It says "Attempted to access JTAG server -- internal error code 82 occurred". Auto detect doesn't work. This error appears in the Konsole window I started Quartus from:--- Quote Start --- /home/phma/altera/12.0sp2/quartus/bin/jtagd: 69: exit: Illegal number: -1 *** The Quartus II software cannot be started because the current platform, 'linux64', does not appear to be installed in: '/home/phma/altera/12.0sp2/quartus'. --- Quote End --- There is no man page for jtagd or jtag; I don't know what they are. They aren't in the path either.