General Description: When installing the 3.1i tools, if the install location is a root directory, the FPGA Express installation can hang. This occurs when a location such as "D:\\express" is specified, as this is not recognized as a valid install location.
This is a known problem with the FPGA Express installer. The workaround is to first uninstall the 3.1i software, then remove any remaining files. (Be sure to save all data, license files, etc. that might be contained in the Xilinx tree.)
Then re-run the installation, this time choosing an install location other than the root directory. An example would be to change the install location from "D:\" to "D:\xilinx".