DataReport cause error.. can help??

i hav almost complete my prog.. a membership prog.. however, in my report section.. i found tat thr is a unknown error.. nt 100% occurs.. tat make me harder to debug it..

any one can help?? or face it before??

it happen after u pressed d print report button (DataReport.printReport) ..then it print d report.. as normal.. however.. thr is a 30% possibility tat my prog will crash or hang.. i donno y.. i tried to disable my printing module and tis solve d prob..

it looks like d processor doing somethg when its hang.. d only way can stop it is end task d prog.. anyone hav idea??? pls help... urgent....

maybe you are executing a loop while printing or the report you are printing is very long