obabel is looking for data files that contain atom definitions, force field parameters and so on. You need to set the enviroment variable BABEL_DATADIR either globally or in your batch file, e.g. add
set BABEL_DATADIR=C:\ProgramData\OpenBabel-2.3.1\data

The directory might be different on your system. So simply search for UFF.prm and set the variable accordingly.

Best regards
Andreas



-------- Original-Nachricht --------
Betreff: [Open Babel] question regarding error messages and poor results
Von: Moshe Ben-zion <moshe.ben-z...@biu.ac.il>
An: openbabel-disc...@lists.sf.net <openbabel-disc...@lists.sf.net>
Datum: 25.02.2016 11:23

I would greatly appreciate some help with my problem.

I am not a linux programmer and am using the obabel in a batch file (or the Open Babel GUI) when I try to convert smi files to 3d sdf format using Gen3d, I get a lot of error messages such as:

I tried to find an explanation in your forum but did not understand what I found there.

In addition, the 3d coordinates were quite terrible for many of the compounds that I calculated see attached file

Expected structure

Calculated structure

Thanks, advance for your help,

M. Ben-Tzion

Dr. Moshe Ben-Tzion

Department of Chemistry

Bar-Ilan University, Ramat Gan 52900, Israel

e-mail: ben...@biu.ac.il <mailto:ben...@biu.ac.il>

Website: http://ch.biu.ac.il/bentzion

Tel: (03) 531-8305   Fax: 972-3-738-4053

Cell:(054) 660-3310   Beeper: 88341(610-6666)

=============================================

In the beginning there was nothing and then G-d created light.

And there was still nothing but you could see it better.



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