Lattice iCEcube2, error synplify_pro 321
the issue here is that the "execute" script that iceCube2 is trying to run, is using as "shell" /bin/sh linked to /bin/dash, in Ubuntu, instead of /bin/bash.

the best workaround i found, is to change the shell from /bin/sh to /bin/bash in the first line of all the shell script in these directories..

/opt/iCEcube2.2017.01/synpbase/bin/
/opt/iCEcube2.2017.01/synpbase/bin/config/