[Freeciv-Dev] gtk client core dump

[Andrey Kotrekhov <kota@xxxxxxxxx>]

Last 2 weeks periodically I get freeciv from cvs.
But when I start client and connect to the server and type /start.
I choose nation and client exit with assertion:

assertion "frozen_level >= 0" failed: file "agents.c", line 249

The map on the server is Europe.
What am I doing wrong?
Server which I use is 1.12.0. I got it from cvs near month ago.

source:
--------------------------------
static void thaw(void)
{
 if (DEBUG_FREEZE) {
   freelog(LOG_NORMAL, "A: thaw() current level=%d", frozen_level);
 }
 frozen_level--;
 assert(frozen_level >= 0);
~~~~~~~~~~~~~~~~~~~~~
 if (frozen_level == 0) {
   call_handle_methods();
 }
}
---------------------------------
Best regards.
Andrey.