Xilinx ISE fails to use std_logic_1164

I have Xilinx ISE 13.1 installed on an ACER laptop with Win7 (64bit).

After installing the software (WebPACK version) I created an empty VHDL module and ran "check syntax". The process failed with the following errors:

Error:HDLParsers:3016 - "C:/Users/..." Library unit standard required for unit std_logic_1164 does not exist in library std.

and

Error:HDLParsers:3046 - "C:/Users/..." Line 21. Library unit ST开发者_开发知识库D_LOGIC_1164 is not available in library IEEE.

This also occurs if I run synthesize.

Googling solutions hasn't been very effective and the hyperlink for the error in ISE leads to a "page not found" result from the Xilinx website.

If anyone can shed any light on this I'd be very grateful.

make sure you install Xilin in a directory that does not contain space, some of Xilinx scripts will not work if your path contains a space.

It is a common mistake and should have been taken care of the installation SW, but Xilinx doesn't seem to be able to fix it after all these years.

Try to re-install the SW, make sure you install all your libraries and programs on the C:\ or what ever root directory you have and absolutely not under "program files" or "My Document" or something like that.