We have a Sony DVP-N5315 video camera that records to a DVD-RW format.
We have many problems playing these disks on other DVD players.  Can
you find any info  on the web for this issue?

A problem with Sony is that it uses a CD/DVD format that is
proprietary to that organization.  The DVD players that you are most
likely having conflicts with are not Sony products and also follow a
different format that was developed by Phillips later on became the
standard for doing business.  While Sony has the financial resources
to risk in a stake that it has undertaken it is at the same time
making and limiting itself to a narrow range of products that are
incompatiable with other products.  But interestingly enough other
vedors product formats are more so than not compatiable with Sony
products because they use the widely accepted and agreed upon format
they most of the larger organization developed in a joint effort. 
Your problem is most likely a compatiability issue and not a defective
hardware/software issue.  I am willing to guess that you could use an
S-cable and feed it into any supportive S-cable TV other than Sony and
you would be able to watch the images/video that has been recorded. 
It would also work with a Sony TV however this would show how Sony
media objects can be displayed on other vendors devices.

psulion05-ga
Great comment and I appreciate your input. However, I summized the
same thing and what I am really looking for is published facts that I
can give to my unhappy client. Sorry I was not more specific on what I
needed.

FYI - the Sony DVD-RW mini plays fine on a Sony DVD player. It just
will not play on any others. A disk duplicator will not duplicate the
Sony DVD either.