Topic:
Fault boundaries disappear with SIGSEGV crash on basemap.

Description:
Fault boundaries vanish when zooming in more than once on the basemap.  In other
similar occasions, user may experience core dump or receive token errors.

Solution:
This is a known bug.  DO NOT scroll or zoom while editing fault boundaries. 
Strange things may happen if you scroll or zoom while in active edit mode.  This
can corrupt your fault interpretation with no workaround.  It is suggested that 
user break after editing fault boundaries, then clear, then scroll or zoom to 
prevent problems.  

If the project is corrupted, an interpretation rebuild may not work after doing 
this a few times; deleting fault f, merging out interpretation and back in might 
fail; and exporting as ascii then reimporting may fail after doing this for 
awhile.  

The only solution after that is to restore from a backup BEFORE the problem 
first occurred.  Many users may continue working after things get corrupted and 
not know what damage is being done.

Break, then clear before scrolling or zooming while in fault boundary edit mode. 
This does seem to prevent these problems. 

This will be corrected in GF3.5.



Last Modified on: 28-SEP-98