Dear Jorge,

I was unable to reproduce the error you report with 7.0.1.

I selected an MTZ file, then chose 'use' FreeR flag and I run the job.

I get:

#CCP4I VERSION CCP4Interface 1.4.4.2
#CCP4I SCRIPT LOG arp_solvent
#CCP4I DATE 29 Apr 2008  10:56:28
#CCP4I USER Tassos
...
mtz labels taken: FP SIGFP FreeR_flag
...
FreeR will be used for monitoring and sigmaa calculations
...
Starting model:  After refmac, R = 0.162 (Rfree = 0.170)

Could you please try to do the same with first building the standard example (psp) and then adding waters?
It might be a problem with your mtz file.

Tassos

On Apr 28, 2008, at 15:22, [EMAIL PROTECTED] wrote:

Hi all,

We recently installed arp/warp 7.0.1 under ccp4i (CCP4_6.0.2). The installation went fine. We just wanted to add water molecules to the current model. We toggle to "use" in the box

"For refmac5 refinement do -use- the Free R flag"

   Also, we choose the due flag in the box

Determine the free R label for reflections to be escluded from refinement -FreeR_flag-"

When we ask the program to run, it does, but without using the Free R-flag; it says "FreeR will not be used" in the log file and the R-free is reported as 0.000. Curiously, the box where the free R label is becomes blank.
   We googled and searched archive lists (both warp and CCP4).
   What the problem might be ?

Jorge

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