Error (293007): Current module quartus_map ended unexpectedly

I am trying to compile the hello_world opencl example. I got the emulator version working fine. Am now trying to build the hardware version.

Compile line is

aoc device/hello_world.cl -o bin/hello_world.aocx --board s5_ref

After 20 minutes it fails with following message

Error: Compiler Error, not able to generate hardware

The following is the tail end of the quartus_sh_compile.log file

Info (12128): Elaborating entity "system_mm_interconnect_2" for hierarchy "system:system_inst|system_mm_int

Error (293007): Current module quartus_map ended unexpectedly

Error: Flow compile (for project /home/mps/altera_projects/mhello/mhello/top) was not successful

Error: ERROR: Error(s) found while running an executable. See report file(s) for error message(s). Message

No other log or report files seem to have anything worth mentioning.

Thanks for any help. PS using linux redhat, version 14.1 of quartus.