English Translation for us who don't speak spanish:

My problem is the Following one: I have made a form with a simple Grafico, Is that in some, single some maquinas give the following error me, Ora-0000 Og-01603 has not been able To create Context for Pl/Sql Development Enviroment. and soon ORA-01009 Mising Mandatory Parameter and Does not work the Grafica? Nevertheless in other maquinas funcina very well.