cl-test-grid was installed in cygwin64 directory (I'm using it's bash as a console). I'm sure I did run it with bytecmp compiler on 16.1.2 *and* 16.0.0 (last two runs), but probably windows is too _alient_ to me and I did something weird. I've started 16.0.0 run on my machine and will start also 16.0.0 on 32bit Ubuntu VM.
There are logs in work-dir/agent/agent.log. You can check them or send me.
BTW, I've been running ECL on windows in the past without difficulties.
I'll pass with windows this time :-)
OK