restart file error due to rapid change in flow condition .so first you have to the model for warm up condition that means you have to go unstady flow data then initial condition.In initial condition u have to chose second condition initial promt.after this you have to run the model such as 1 MAR to 15 MAR.Befor run the model you have to go output options which is the condition u run the model in second term.after complete the process,you chose unstady data >initial condition>restart file>prompt the file and search such as p69 if u run the model by giving the name plan 69 .After selection,you have to run the model from the date u chose to run and complete the process