Dear Chimera users,

I am trying to convert sdf file ( downloaded from diversity set data from 'http://scs.illinois.edu/htsf/compound_collection/nci.php') into mol2 format. When I ran the command chimera --nogui processSDF.py
as given the previous posting ( http://www.cgl.ucsf.edu/pipermail/chimera-users/2010-March/004974.html), I got the following error messages:
Cannot find consistent set of bond orders for ring system containing atom #0.73:1@N1
---
Unknown redo atom type: N3
Traceback (most recent call last):

Any suggestions for correcting these errors will be a good help for me.

Thank you,
Mahendra Thapa
University of Cincinnati,OH