convergence problem

[borjiajia]

Every time I run the program, it says

"ModifiedNewton::solveCurrentStep() -the ConvergenceTest object failed in test()
DirectIntegrationAnalysis::analyze() - the Algorithm failed at time 9.96
OpenSees > analyze failed, returned: -3 error flag
Trying Newton with Initial Tangent .."

So ,what does it mean?
what should I do?

[fmk]

it means your nonlinear model is having problems converging .. try something else.