I know you said that the -t command crashes, but what happens if you type this:
nheqminer -l zec-apac.suprnova.cc:2142 -u siddartha.sid -p xx -t 3 -od
Note, the -od at the end. I use that in mine for Suprnova with no issues. Other than that, I'm fresh out of ideas. You can try asking here:
https://bitcointalk.org/index.php?topic=1747789.0Good luck.