Error when I building project of NIOS II IDE

Hi,

I do face this kind of problem

make -s all includes

Creating generated_all.mk...

5 [main] ? (2692) c:\altera\91\quartus\bin\cygwin\bin\sh.exe: *** fatal error - couldn't allocate heap, Win32 error 487, base 0x680000, top 0x690000, reserve_size 61440, allocsize 65536, page_const 4096

I am using Nios II 9.1 IDE and Nios II SBT for Eclipse. Unfortunately, both platform also gave me this error. I have disabled all the Anti virus software and Logitech web cam, May I know what cause this error?

I am very urgent, please guide me....

Thanks

Caridee