capacitor simulation error

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 Hi; I Have an problem;

When simulating  "time step too small " often occurs;  After Using Convergence Assistant; I can simulate but the output of XSC1 is not corrent , It include direct flow,

The capacitor C1 not filter dirent flow. and in "alteractive simulation settings" ->"initial conditions" is changed from "Automatically ..." to "user defined"

If I change from "user defined " to "Automatically ...", when simulating the simulation error dialog occurs.  the multisim version is 10.0 

[OStep]

Hi,

Please attach your circuit.

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Hi, Thank you for your anwser!

This is my circuit!   supplement at once: if change at "interactive simulation setttings"-->set to zero, output of XSC1 also include direct flow.

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Avoid re-build the circuit map, I post the circuit map directly. 

summarize:  "interactive simulation settings" -> "set to zero"     result:     output have direct flow.

                    "interactive simulation settings" -> "user define"     result:     output have direct flow.

                    "interactive simulation settings" -> "DC operating ..."     result:     simulation error occurs: time step too small

                    "interactive simulation settings" -> "Automatically ..."     result:     simulation error occurs: time step too small

Would you like to explain the role of "time step" in multisim?

Thank you! 

[pretty]

There is a simple circuit about capcitor. the rusult is :

     "interactive simulation settings" -> "set to zero"     result:     output have direct flow.
     "interactive simulation settings" -> "user define"     result:     output have direct flow.
     "interactive simulation settings" -> "DC operating ..."     result:     output have no direct flow.
     "interactive simulation settings" -> "Automatically ..."     result:     output have no direct flow.

I do not know the reasons.  Please help me explain it.   Thank You!!!