Hello Prof Brian Ripley, Yihui and Tom,

Thank you for your suggestions.  It seemed to have made some differences in
the error massages - but rggobi still fails to load.

Steps taken:
1) I removed the old GTK (through the uninstall interface)
2) I ran  library(RGtk2) which downloaded the new GTK-runtime
version 2.22.0-2010-10-21 (instead of the one I got from ggobi, which
was 2.12.9-2).
3) I downloaded both
ftp://ftp.zlatkovic.com/libxml/libxml2-2.7.7.win32.zip and
ftp://ftp.zlatkovic.com/libxml/iconv-1.9.2.win32.zip
Unzipped them, and moved their dll's (from their bin directory), into -
C:\Program Files (x86)\GTK2-Runtime\bin
4) I then tried starting rggobi:  library(rggobi)  and got the following
error massages:

Error 1:

the program can't start because
libgdk-win32-2.0-0.dll
is missing from your computer.
Try reinstalling the program to fix this problem.

It then tried to reinstall GTK, and after I refused to, it sent the second
Error massage:

the program can't start because
libfreetype-6.dll
is missing from your computer.
Try reinstalling the program to fix this problem.



Any suggestions what else I should try?

Many thanks for helping,
Tal




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On Wed, Jan 26, 2011 at 9:17 AM, Prof Brian Ripley <ripley@stats.ox.ac.uk>wrote:

> On Tue, 25 Jan 2011, Tom La Bone wrote:
>
>  I recall that my problem on Windows was related to having a number of
>> stray
>> versions of GTK+ installed. I went back and deleted all versions and
>> reinstalled the latest GTK+ and that seemed to fix things. However, when I
>> went to do any work of substance ggobi locked up and became unresponsive.
>> Never did get it working right on Windows. Had much more luck with R/ggobi
>> on Ubuntu 10.10.
>>
>
> I've just been setting rggobi up for our classroom.  It seems that on
> Windows we now need to use Rgui in SDI mode to run rggobi without lookups.
>  (That was not the case last year, so it might be due to the change in GTK+
> version or it might be due to the change from XP to x64 Windows 7 on those
> machines.)
>
> The rggobi binary on CRAN extras is statically linked against everything
> except GTK+, but the www.ggobi.org ggobi DLL needs both GTK+ DLLs and
> libxml2.dll (which needs iconv.dll and zlib1.dll). Late last year there was
> a problem in that GTK+ and libxml2.dll needed different zlib1.dll's, but
> AFAICS this is now resolved by using
> ftp://ftp.zlatkovic.com/libxml/libxml2-2.7.7.win32.zip and
> ftp://ftp.zlatkovic.com/libxml/iconv-1.9.2.win32.zip.  (Unpack those and
> drop the DLLs into somewhere on your path, e.g. the GTK+ bin directory.)
>
> We've had a lot of trouble over zlib1.dll: those prepared from zLib 1.2.3
> and 1.2.5 are incompatible.  The whole point of the '1' in the name is to
> change the name in that case!  I suspect very few of those benefitting from
> Windows binary packages have any idea how much work goes into circumventing
> such issues.
>
>
> --
> Brian D. Ripley,                  ripley@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>
>
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