Failed to open '/cygdrive/c/altera/14.1/embedded/host_tools/altera/preloader/uboot-socfpga.tar.gz'

How can i solve this Problem?

i lost too much time on this issue.

Thanks in Advance.

tar zxf /cygdrive/c/altera/14.1/embedded/host_tools/altera/preloader/uboot-socfpga.tar.gz

tar: Error opening archive: Failed to open '/cygdrive/c/altera/14.1/embedded/host_tools/altera/preloader/uboot-socfpga.tar.gz'

make: *** [uboot-socfpga/.untar] Error 1