Jaroslaw, you should not merge two databases that come from an equal base.
The error you get is:

HandleError: Family handles in two databases overlap.

So you have equal data in both databases due to using the same base version. You can try an import with merge of equal data with the xml .gramps format in version 3.0.1 of GRAMPS, but it is _NOT_ supported. It will give you some feedback though.

Always work on backup copies for these type of things, and take a backup before every import, because this is a highly fragile and disruptive thing to do.
Note that consequetive imports work, but the idea is you obtain new information from another researcher and you merge that into your database.

Benny


2008/5/29 Jaroslaw Lalik <jlalik@poczta.fm>:
"User Information:
===================




Error Details:
===================

62751: ERROR: DbLoader.py: line 501: Failed to import database.
Traceback (most recent call last):
 File "/usr/share/gramps/DbLoader.py", line 497, in do_import
   importer(self.dbstate.db, filename, self.uistate.pulse_progressbar)
 File "/usr/share/gramps/GrampsDb/_ReadGrdb.py", line 163, in importData
   the_len += check_common_handles(table,other_table,msg)
 File "/usr/share/gramps/GrampsDb/_ReadGrdb.py", line 229, in check_common_handles
   raise HandleError(msg)
HandleError: Family handles in two databases overlap.

System Information:
===================

Python version: 2.5.2 (r252:60911, May  7 2008, 15:19:09) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)]
BSDDB version: 4.4.5.3
Gramps version: 2.2.10-1
LANG: pl_PL.UTF-8
OS: Linux
Distribution: 2.6.24-17-generic
"


----------------------------------------------------------------------
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