>"Error Reading File" in my experience has resulted from a file that was previously accessible becoming inaccessible.
>Usually that has been caused by a dropped network connection resulting from a faulty NIC, cable or switch, but it can be from other causes such as a process being terminated somehow.
>I've never seen it caused by a programming error.

Hi Bill. I know. Instructions which cause error execute one millions of times every day. But when errors occurs 3 or 4 times a day users say "I couldn't work. The whole day I've been having problems.

Just one client? No problema. Several clients... Hardware provider?

Héctor