Vuescan autorop not working in 8.3.53?

[Olaf]

I've been struggling with the auto-crop feature of Vuescan for quite a
while. After improvements were announced in 8.3.46 I thought I'd try a
new version of Vuesan once again.

I've downloaded and installed 8.3.53 but I'm pretty disappointed. The
auto-cropping basically does not work. Here's a link to a picture how
the auto-cropping algorithm currently works (only a small part of the
image is selected): http://www.olafmeyer.de/vuescan/vuescan_autocrop_bug.gif

Unfortunately I cannot roll back to my previous version (8.3.39). When
trying to do so, I get the following error message:
http://www.olafmeyer.de/vuescan/vuescan_install_error.gif
Nevertheless Vuescan can be started but does not scan properly.
http://www.olafmeyer.de/vuescan/vuescan_8_3_39_scan.gif

Have any of you encountered similar problems and found any workarounds?

Thanks,
Olaf

 

[Steven Saunderson]

Unfortunately I cannot roll back to my previous version (8.3.39).

Can you try removing all files from the Vuescan directory before you try
to install the old version ? Or even removing the Vuescan directory and
all its files ?

 

[Olaf]

Can you try removing all files from the Vuescan directory before you try
to install the old version ? Or even removing the Vuescan directory and
all its files ?

I removed the entire C:\vuescan directory prior to the installation.

 

[Bart van der Wolf]

SNIP

I've downloaded and installed 8.3.53 but I'm pretty disappointed.
The auto-cropping basically does not work.

Do you mean it never works, or is it on some specific images?
I'm sure Ed Hamrick would love to use your example to improve the
detection algorithm or it's sensitivity to edge detail. It may also
have to do with the preview resolution, if you bump that up on the
"Input" Tab, it might help matters.
Make sure you feed back your example to Ed Hamrick, how else could he
(and we for that matter) benefit from your observation.

Unfortunately I cannot roll back to my previous version (8.3.39).

SNIP

While that's a (relatively) old version to revert to, you possibly
didn't follow the recommendations to delete or rename the existing
VueScan folder, before re-installing any other version. I've never had
installation problems when I allowed VueScan to create a brandnew
VueScan folder.

Have any of you encountered similar problems and found any
workarounds?

You could just set the cropping to maximum, instead of Auto. That way
you'll never miss a thing, and you can always crop later.

Bart

 

[Bart van der Wolf]

Steven Saunderson schrieb: SNIP

I removed the entire C:\vuescan directory prior to the installation.

Good. You could in addition search for other instances of
"vuescan.ini" on your system, prior to re-installation. There may be
another, incompatible, copy of that version specific file on your
machine. Downgrading from a higher version number also could mean that
some of the newer functionality has some new keys in that INI file,
which may confuse older versions.

Bart

 

[Olaf]

Do you mean it never works, or is it on some specific images?
I'm sure Ed Hamrick would love to use your example to improve the
detection algorithm or it's sensitivity to edge detail. It may also have
to do with the preview resolution, if you bump that up on the "Input"
Tab, it might help matters.
Make sure you feed back your example to Ed Hamrick, how else could he
(and we for that matter) benefit from your observation.

It particularly does not work well with images that only have a few
black edges left (i.e are almost cropped). Changing the preview
resolution actually does not help.

I've already sent a report to Ed's support e-mail.

Olaf

 

[Olaf]

Good. You could in addition search for other instances of "vuescan.ini"
on your system, prior to re-installation. There may be another,
incompatible, copy of that version specific file on your machine.
Downgrading from a higher version number also could mean that some of
the newer functionality has some new keys in that INI file, which may
confuse older versions.

Bart

There's no other vuescan.ini file hanging around. Unfortunately this is
not the first time I'm experiencing problems after upgrading to a newer
version. I thus always keep all installation executables at hand in
order to perform a roll back, but now it seems that I'm stuck!

 

[Bart van der Wolf]

SNIP

There's no other vuescan.ini file hanging around. Unfortunately this
is not the first time I'm experiencing problems after upgrading to a
newer version.

Which is already a signal that something else is at play here! I have,
in the many years that I've used VueScan, *never* had a VueScan
installation that does the things you mention, including Win98 and ME
installations. I don't even recall a single installation (besides a
few corrupt downloads) that failed as you described or otherwise.
There must have been maybe a hundred installations (they used to roll
out at an average of 1/week) or more on at least 5 different harddisks
of mine, and several temporary installations on other people's PC when
I worked with their scanners, over the years.

I thus always keep all installation executables at hand in order to
perform a roll back, but now it seems that I'm stuck!

Intriguing, but frustrating no doubt. Have you tried installing with
the virus scanner switched off? Have you tried re-booting (cold
reboot, so wait 15 seconds after switching off) after removal and
before re-installation? Have you tried a fresh download of the latest
version?

Bart

 

[Olaf]

Which is already a signal that something else is at play here! I have,
in the many years that I've used VueScan, *never* had a VueScan
installation that does the things you mention, including Win98 and ME
installations.
*** SNIP ***

I wasn't referring to installation problems, but to problems with the
functionality of Vuescan after upgrading. This is also the first time
that I'm experiencing installation problems.

Intriguing, but frustrating no doubt. Have you tried installing with the
virus scanner switched off? Have you tried re-booting (cold reboot, so
wait 15 seconds after switching off) after removal and before
re-installation? Have you tried a fresh download of the latest version?

I now can finally install the version I was having problems with. It
seems that it was a WinXP related problem. Although I was doing the
installation with Admin priviliges it failed. After logging in as Admin
it now works ...

But I'm not amused by the bugs I now found. I'll post them in the other
thread I have related to the scanning of raw files ...

Thanks for your suggestions!
Olaf

 

[Don]

I've downloaded and installed 8.3.53 but I'm pretty disappointed. The
auto-cropping basically does not work.

The author re-released VueScan 8.3.53 with a fix to the cropping problem,
a few hours after someone reported the problem to him.

I take back everything bad I've said about him - he provides terrific
support, and VueScan is a wonderful program.

Don