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Dear all,

I'm converting intensities from scala to amplitudes with ctruncate like so:

ctruncate -mtzin scala_protein_3_001_180.mtz -colin "/*/*/[IMEAN,SIGIMEAN]"

The data are native.  An mtz file is generated, and it looks ok, but
ctruncate doesn't terminate properly.  Instead, after Anisotropy
analysis, the following error is reported:

>>>>>> CCP4 library signal mtz:No architecture information in file. (Warning)
         raised in MtzGet <<<<<<
>>>>>> CCP4 library signal mtz:File not identified as MTZ (Error)
         raised in MtzGet <<<<<<
Segmentation fault


This happens with ctruncate in ccp4 6.1.0 and with ctruncate
downloaded from ftp://ftp.ccp4.ac.uk/nds/bin/ctruncate, both on RHEL
5.4.

Should I be concerned?


Andreas


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Andreas Förster
Macromolecular Structure and Function
Imperial College London