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> Serious questions about this all-too-often seen error:
> Warning: While decoding this file Opera encountered errors.
> 1. Why does Opera 8b still have these errors?
> 2. Why is there not some additional information presented about each
> occurrence, for example, a sub message.
> 3. Will raw copy get all the original stuff that came in?
> 4. Is anyone at opera development accepting these to analyze them so that
> future upgrades handle them?
> 5. Is there a standing bug or other place to forward or report them?

Opera is displaying this message because it detected something in the
email that was not following the MIME standard. It will try to work
around the problem, but in some cases the email might not be decoded
properly.

The most common reason for this is lines that are too long, there is a
limitation on the linelength that can be used when encoding the email.
The limitation is there to prevent problems in mail processing agents
that have limited buffers. Opera is able to handle such lines but just
in case we are signaling a problem.

You might also get this message if a Base64 encoded body contains
characters that are not permitted in Base64, incorrectly formatted
multiparts, and there are other possibilites.

Currently the system does not include a "what went wrong" indication

In most cases Opera is able to decode the email properly, but the
warning is there to indicate that if the email does not display as
expected it was probably caused by an error in the email.