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It might be worth checking $CCP4/include/ccp4.setup (whichever one you're
using) to check on the tcl/tk/bltwish locations and versions before
reinstalling.  Especially if programs are working either from a
command-line or a script (does mtzdump hklin /home/uma/cal_iodine/n_i.mtz
give a similar error?).

Pete

> Hello CCP4bb,
>
> We recently upgraded the OS on our computer from FC 5 to FC 6. We had
> CCP4-6.0.2 preinstalled on the computer. Since the upgrade, we are facing
> problems in running the CCP4 programs. The gui opens normally, but while
> running any program, following error pops up when any file is attempted to
> open:
>
> CCP4i encountered an error when trying to extract the data from
> /home/uma/cal_iodine/n_i.mtz
> you can view the output file from the mtzdump program which may give an
> indication of the problem. otherwise you should dismiss this window.
>
> When the mtzdump file is tried to oepn, following messages pop up:
>
> ERROR extracting data from /home/uma/cal_iodine/n_i.mtz
>
> and
>
> Error: can't read "array(HKLIN)": no such element in array.
>
>
> Any suggestions to rectify this problem? Do I need to install the CCP4
> package again?
>
> Regards,
> Uma.
>
> ---------------------------------
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Pete Meyer
Fu Lab
BMCB grad student
Cornell University