>I have a VFP 5 program that reads COM port and writes a dbf for a later process. All goes well when the program runs alone but in the PC where this application must run when a DOS aplication is started, my program stop with this error: '1103: Search offset invalid' (in spanish: desplazamiento de busqueda no valido).
> Looking in the error list, the unique explanation of this error is I have to report this error to Microsoft.
> I'm trying to reproduce this error in my PC but isn't possible.
> I need help, anyone have an idea?

Can you give me the commands you are using to read the COM port ?