RE: AMBER: Could not open file (Melb.mdcrd) with mode (r)

From: Ross Walker <>
Date: Mon, 19 Sep 2005 10:17:29 -0700

Hi Varsha,

> > $AMBERHOME/exe/ptraj <
> extract_frame.trajin > extract_frame.out
> ...
> Checking coordinates: Melb.mdcrd
> Could not open file (Melb.mdcrd) with mode (r)

A few questions...

1) Can you open Melb.mdcrd in the current working directory in something
else? Like vi or emacs? Do you have permission to read the file?

2) Can you post your extract_frame.trajin file so I can check it?

3) Have you got the case correct? Most (all?) Unix machines are case
sensitive while Windows machines are not. Thus on a Unix machine Melb.mdcrd
and melb.mdcrd are different files while on a windows machine they will be
treated as the same file. You should check this.

All the best

|\oss Walker

| Department of Molecular Biology TPC15 |
| The Scripps Research Institute |
| Tel: +1 858 784 8889 | EMail:- |
| | PGP Key available on request |

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Received on Mon Sep 19 2005 - 18:53:00 PDT
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