8051 proteus,please help

dsim model mcs8051.dll failed to authorize

I have proteus 6.7 sp3

I recieve this error message when I try to run the simulation. (the project was created in another computer.


SIMULATION LOG
==============
Design: C:\Program Files\Labcenter Electronics\Proteus 6 Lite\keypad_and_lcd\keypad and lcd\Door.DSN
Doc. no.: <NONE>
Revision: <NONE>
Author: <NONE>
Created: 03/24/06
Modified: 08/06/20

Compiling source files...
Build completed OK.
Compiling netlist...
Linking netlist...
Partition analysis...

Simulating partition 1
PROSPICE Release 6.7 SP0 (C) Labcenter Electronics 1993-2005.
SPICE Kernel Version 3f5. (C) Berkeley University ERL.

Reading netlist...
ERROR: [U1] DSIM model MCS8051.DLL failed to authorize - Product Key does not match Customer Key.
Reading SPICE models...
Loading library 'LINTEC.SML'
Loading library 'FAIRCHLD.SML'
Loading library 'NATOA.SML'
Loading library 'TECCOR.SML'
Loading library 'TEX101.SML'
Loading library 'TEX3_1.SML'
Loading library 'TEX301.SML'
Loading library 'TEX401.SML'
Loading library 'TEX5_1.SML'
Loading library 'VALVES.SML'
Loading library 'ZETEX.SML'
Loading library 'SUPERTEX.SML'
Loading library 'ANALOGD.SML'
Loading library 'APEX.SML'
Loading library 'BURRBROWN.SML'
Loading library 'ELANTEC.SML'
Loading library 'INTERSIL.SML'
Building circuit...
Instantiating SPICE models...
Real Time Simulation failed to start

Simulation FAILED due to fatal simulator errors.

8051 proteus

It seems that you have a licence problem.
Please don't use a title for your thread like this.

.dsn mcs-51 proteus

Is ur Design is correct. Cos the when the circuit is also wrong it shows the same problem when u simulate it . check whether all ur connections are correct

mcs8051.dll failed to authorize

Most likely you don't have a licence for 8051 simulation on the host computer.

Iain.