it won't work - any ideas? about fpga-devcloud HOT 1 OPEN

aoc device/hello_world.cl -o bin/hello_world_fpga.aocx -board=pac_a10
aoc: Running OpenCL parser....
aoc: OpenCL parser completed 
aoc: Linking Object files....
aoc: Optimizing and doing static analysis of code...
aoc: First stage compilation completed successfully.
aoc: Compiling for FPGA. This process may take several hours to complete.  Prior to performing this compile, be sure to check the reports to ensure the design will meet your performance targets.  If the reports indicate performance targets are not being met, code edits may be required.  Please refer to the Intel FPGA SDK for OpenCL Best Practices Guide for information on performance tuning applications for FPGAs.
Error (23035): Tcl error: 
Error (23031): Evaluation of Tcl script build/entry.tcl unsuccessful
Error: Quartus Prime Shell was unsuccessful. 2 errors, 0 warnings
Error: Compiler Error, not able to generate hardware