REG:XILINX ISE 11.1 INSTALLED CORRECTLY BUT NOT ABLE TO SIMULATE ISIM

[roopa]

Iam using windows 7 X64 bit dell desktop and i downloaded ISE 11.1 Webpack it worked fine and i am able to implent it properly but when i was simulating it (using ISIM) iam getting error saying that

WARNING: A WEBPACK license was found.

WARNING: Please use Xilinx License Configuration Manager to check out a full ISim license.

WARNING: ISim will run in Lite mode. Please refer to the ISim documentation for more information on the differences between the Lite and the Full version.

This is a Lite version of ISim.

Time resolution is 1 ps

Simulator is doing circuit initialization process.

Finished circuit initialization process.

at 0 ps, Instance /counter_tb/U_counter/ : Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).

at 30 ns: Error: Failed case 1

at 40 ns: Error: Failed case 2

at 50 ns: Error: Failed case 3

at 60 ns: Error: Failed case 4

at 90 ns: Error: Failed case 5

ISim>

[davidch]

Can you successfully simulate an example design with ISIM (File -> Open Example)?

[roopa]

yes iam able to simulate it....

[davidch · Accepted solution]

In that case it sounds like there's an issue with your code.  You should probably ask about this on the Simulation and Verification board : http://forums.xilinx.com/xlnx/board?board.id=SIMANDVERIBD

It would likely help to see what code you're simulating as well.