Build problem in NIOS II IDE

Hi ,

I am using NIOS II IDE version 12.0. The problem is I couldnt build the simple count_binary demo program. It is showing error as:-

**** Build of configuration Debug for project count_binary_1_syslib ****

make -s all includes

/cygdrive/d/Altera/13.0/nios2eds/components/altera_hal/build/gnu_rules.mk:86: *** multiple target patterns. Stop.

Build completed in 1.686 seconds

/cygdrive/d/Altera/13.0/nios2eds/components/altera_hal/build/gnu_rules.mk *** multiple target patterns. Stop. count_binary_1 line 86 1395203503667 116

/cygdrive/d/Altera/13.0/nios2eds/components/altera_hal/build/gnu_rules.mk *** multiple target patterns. Stop. count_binary_1_syslib line 86 1395203501544 115

I have checked the line 86 but it is only comment. This error comes in all demo programs. :(What to do ?? Please help me in building..