I have an application that is working on most machines, with the
exception of one machine. I delt with the error messages he was
receiving which was nothing more than his machine doesn't seem to hold
variable values. He is not running the application over a network. He
claims he has enough memory to run it and enough hard drive space to
run it. I have files that save the path and asked him to send it to me
and it seems his path references are correct.

What would cause his machine to either not accept variable values or
only hold the value for a line or two? Is this his operating system
since it's not happening to others or is there something I can do or
check within my own application as he's not complaining that this is
happening with any other applications?