error message “flex dongle not found” and time ratio

Hi,

The following is a section of the print file.My simulation time is 310e-6,time step is 2.0e-9. The simulation has run for 0.2876800E-03.However,it then reported error,like the following. What the meaning of this and why?

Another questions is that I don't the time ratio and the default should be 0.8, but the print file says the time ratio is 1.0 . WHY?

Best regards

input- time 2.0e-9 * *      /* Time factor


Problem start time= 0.000000

Model time step= 0.2000000E-08
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input- c Process model, including setting time step
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input- prcs
Elapsed seconds at Begin PRCS = 5.966E+00
Elapsed seconds at Begin GLUE = 5.966E+00
Elapsed seconds at End GLUE = 5.966E+00
Elapsed seconds at Begin Continuum = 6.646E+00

zone 1 type=stnd
ibeg= 1 iend= 8071 jbeg= 1 jend= 2344 kbeg= 1 kend= 1
min distance= 0.1502037E-04 for i= 7977 j= 1 k= 1 material=steel
min transit= 0.2545826E-08 for i= 7977 j= 1 k= 1 material=steel
max time step= 0.2036660E-08
Elapsed seconds at End Continuum = 7.979E+00
Elapsed seconds at Begin BOUN = 7.997E+00
Elapsed seconds at End BOUN = 8.006E+00

model time step= 0.200000E-08
zone 1 time ratio= 1 time step= 0.200000E-08
 input- c Run model for some time
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input- exec $nexec2

Execution complete: current timestep= 143840 ; time= 0.2876800E-03

Total CP seconds for this job= 3843272.

CP seconds for executing 310 timesteps= 8111.500

CP seconds for structural grid = 8111.500

CP seconds for each timestep computed = 26.16613

CP seconds for each element computed = 0.5167403E-05
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input- c Plot current state of model
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input- grph
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input- colr tabl data 6
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input- plot aprs rang 0 3 /* plot acoustic pressure
plot command executed
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input- plot 2 /* plot charge on top electrode
plot command executed
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input- imag /* save plots to movie
Using CODEC msvc for t2 at 15 frames per second
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input- end
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input- c Run model for some time
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input- exec $nexec2
**** PZFlex has detected an error****
****Subroutines tracked are: chkkey exegrd jobctl flex
****Error occurred in subroutine chkkey ****
****Error message--Flex dongle not found

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