I just upgraded to Vuescan 7.6.80 (from 7.4.something, I think). I'm
scanning at 4000 DPI (LS-4000) to TIFF and Vuescan is placing invalid
resolution metadata in the TIFF file: "X resoution = 400000 DPI" and
"Y resolution = 400000 DPI". Both Hamrick's own Vueprint as well as
ACDSee report this invalid data as being part of the tiff metadata.
Needless to say, this is causing me some headaches when I try to
resize in PWP. Is this a "known" problem with the new release of
vuescan or have I managed to develop an operator bug? Thanks.

"S.Baggett" <sbaggett@midsouth.rr.com> wrote:
You've probably set something in the Output tab that's
messing up the DPI. Try deleting vuescan.ini and running
VueScan again.

Regards,
Ed Hamrick