According to my previous post
(http://tech.groups.yahoo.com/group/ecco_pro/message/6724), I also get an error
with Shift-F5!
Here is a partial copy of that post:
 
3. Shift F5 works - No Application Error in Many_junk_items.eco or in my regular
file! I then followed this by destructive analysis:
 
Many_junk_items.eco:
Passes the first time, but always "Unable to complete command" in Ecco and
ERRORS DETECTED in EM-ADT on the second try.
 
Thus, the file is corrupt per EM-ADT.

1. using f5 will generate ecco memory errors.   Shift + F5 will not.
 
2. The underlying structure of the tables tests fine.  Putting huge stress on the file causes a problem with the file.  The problem is not appearing as an issue with the inner table structure.    
 
3. Clearly something is not working properly in the structure of this file.