>In this particular app, I am stuck with VFP 6.0 due to the operating system requirement. I don't think that VFP 6.0 has Try/Catch, does it? I cannot upgrade the particular machine that this program will run on until I also upgrade the DOS Hand-Held Barcode Scanners to Windows Scanners.

Well, the title says "VFP 9".

In VFP 6, you would use ON ERROR, more or less like this:

local llError
on error llError = .T.

* The following is the line (or lines) that could cause an error
use MyTable

on error && See note (1)
if llError
  MessageBox("The file could not be opened; please try again later.")
  * Or do some more detailed analysis, e.g. with aerror()
else
  * Go ahead, and do whatever you would with the table
endif

Note 1: This part gets a little more complicated if you already have a previous ON ERROR, which you must restore in this case.