Fatal error while compiling code

[Anukul]

Hi

I am trying to compile a bit of VHDL code on Xilinx SW. The target is
a Spartan2.

I get the following error message
FATAL_ERROR:HDLParsers:vhptype.c:172:$Id: vhptype.c,v 1.6 2001/10/12
21:32:28 weilin Exp $:200 - INTERNAL ERROR... while parsing
C:/project/sensor/vhdl/mult16/mult16.vhd line 716. Contact your hot
line. Process will terminate. To resolve this error, please consult
the Answers Database and other online resources at
http://support.xilinx.com. If you need further assistance, please open
a Webcase by clicking on the "WebCase" link at
http://support.xilinx.com

I did not get this error when I compiled the code for4/8 bits.I get
this error when I compile for a 16 bit application.

Now, the code is lengthy & am really not sure if I can paste the
entire code .And I am pretty clueless as to which specific area of the
code is causing the error.But the line number (716) which shows up on
the error message is the last line of the source code.

I did look up the previous thread on the same topic and the help
suggested there is not applicable in my case.(I am not using any
aliases in the code)

I wonder if anyone could throw some light on the reason for this
error.

Thank you
Anukul