The following error occurs in NGDBuild:
"NGDBuild: 527: Failed to launch program NGDBuild.exe."
This message generally occurs because invalid character names are present in the path to the source files.
To avoid this error message, remove any invalid symbols and special characters, such as "%" and "&".
NOTE: Xilinx design tools support the use of spaces in the pathnames to user files by enclosing the file with quotes.