>>>Could anyone suggest a possible problem/solution?
>>
>>Are you sure that the error was caused by writing a value into this alias?
>
>I put a line:
>

>cPoint = "Point where the error occurred. The value of .PRINT_ORD is " + str( V_CURSOR.PRINT_ORD)
>

>right before the REPLACE command.
>Then the code goes to the CATCH to oError.
>So, I presume that the error is caused by the REPLACE.
>I can't think where else the error would be caused.

Ah, if you already have the oError object, why don't you pass that object to your error handler, and write out all the properties that may be relevant. There's more info in there than just the error message.