Todd,

There are two ways to do this
1. Simply ignore the error
2. Write your own error handler and override Is_Critical

The 1st one is the easiest way:

Code:
Send Ignore_Error of Error_Object_Id DFERR_CANT_OPEN_DATA_FILE
Open Customer
Send Trap_Error of Error_Object_Id DFERR_CANT_OPEN_DATA_FILE
The second one is a bit more complex; Make error 75 no longer a fatal error.

Code:
Object oMyErrorHandler is a ErrorSystem
    Function Is_Critical Integer Error# Returns Integer
        Function_Return False
    End_Function
End_Object
The Is_Critical