Kevin-

>I have coded the error event below into a PRG based class. I am testing
>it from an OpenTable method, passing a table name that doesn't exist, and
>I get a standard VFP error:
>
>"File 'c:\dummy.dbf' does not exist"
>
>Why isn't this error procedure catching the error???

I think we need to step back. I can't recreate the problem with a simple example in 8.0 or 7.0.

LOCAL lo
lo = NEWOBJECT('myClass')
DEFINE CLASS myClass AS FORM

  PROCEDURE ERROR(tnError, tcMethod, tnLine)
    MESSAGEBOX("Error " + LTRIM(STR(tnError))+" in "+tcMethod+CHR(13)+MESSAGE())

  PROCEDURE LOAD
    USE SomeDBF AGAIN IN 0 SHARED

So, how do you know your error method isn't running? IOW, have you put a breakpoint on the line that tries to use the table (?) and then followed the program? Do you have an ON ERROR statement? That *shouldn't* matter since error events take precedence over object error events, but you might want to simplify things as much as possible at least til you find the problem.