help resolving crash problem

Hi I'm just getting started with Scigraphica and I would like to first thank 
you guys for making it.  I have just spent a week looking for a linux 
plotting package that suits me and this seems to be the one.  So great work.
Unfortunately I aslo have to report what seems to be a reproducable issue

Basically I am importing large (10000 line) ascii files for plotting.  There 
are no column headers and the file seems to import fine.  I plot the data 
following the instructions in the tutorial and it works all right.  However, 
as soon as I try and edit that plot everything goes to custard.  The layer 
control will freeze reliably if I choose to edit the dataset properties or 
the axis properties.

The final straw is that if I save the work sheet before I start plotting (so I 
don't have to keep importing).  Then the produced file is empty. 

Thanks for all your work
Cheers
Chris


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