CreateProcess: No such file or directory

Just installed Arduino for the Intel Edison and attempting to compile the default code results in the verbose error below:

Arduino: 1.6.5 (Windows 8.1), Board: "Intel® Edison"

C:\Users\Fred\AppData\Roaming\Arduino15\packages\Intel\tools\core2-32-poky-linux\1.6.2+1.0/pokysdk/usr/bin/i586-poky-linux/i586-poky-linux-g++ -m32 -march=i586 --sysroot=C:\Users\Fred\AppData\Roaming\Arduino15\packages\Intel\tools\core2-32-poky-linux\1.6.2+1.0/core2-32-poky-linux -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -D__ARDUINO_X86__ -march=i686 -m32 -DARDUINO=10605 -IC:\Users\Fred\AppData\Roaming\Arduino15\packages\Intel\hardware\i686\1.6.2+1.0\cores\arduino -IC:\Users\Fred\AppData\Roaming\Arduino15\packages\Intel\hardware\i686\1.6.2+1.0\variants\edison_fab_c C:\Temp\build4078707784857145961.tmp\sketch_feb03a.cpp -o C:\Temp\build4078707784857145961.tmp\sketch_feb03a.cpp.o

i586-poky-linux-g++: error: CreateProcess: No such file or directory
Error compiling.

I have searched these forums and others but the potential solutions seem not to apply (no spaces in the paths, no odd EXEC env vars, etc.) All the files/directories referenced exist. When I move them all to shorten the paths and execute from the command line I get the same error. I have uninstalled and re-installed a couple times.

Any ideas? Thanks in advance.