Have you tried the procedure in the NetView Diagnosis Guide?  Page A-44 may
help.
Failing that, I've done a system trace on "fop" (file opens).  This helped me
find
files that were missing in /usr/OV/bitmaps/C.

elig AT bezeq DOT com wrote:

> Whenever I start a GUI to Netview 5.1.2, I get a small error message window
> saying "Error during reading background file". When I press OK the window
> reappears.
>
> I admit that I added manually some files to the bitmaps/C and symbols/C
> directories, as well as edited oid_to_sym and Oid_to_type, in order to
> conserve several changes which were made to a previous NV6000 release.
>
> Is there a known reason to the subject error condition which can be fixed
> easily?
> --------
> Eli Gal - elig AT bezeq DOT com <mailto:elig AT bezeq DOT com>
> Bezeq - the Israeli Telecommunications Corp.
> Ramat Gan, Israel
> tel: +972-3-5.763.763
> mobile: +972-50-665493
> fax: +1-209-7555542
>
> _________________________________________________________________________