ERROR: LE_NotFoundError: Could not get LE with entnum 6 - R25522

[8472]

R25522

i do have a new mission, crashed fighter UFO.
and the game crashed to the GEOSCAPE with this:

Loaded routing for tile tropic/tr_p01 in   0.0s
Rerouted for RMA in   0.0s
checksum for the map '+tropic': 3497380172
ufo script checksum 921375947
Created AI player (team 0)
Created AI player (team 7)
-------------------------------------
Connecting to localhost...
load material file: 'materials/tropic.mat'
music change to David01 (from PsymongR3)
Starting the game...
__8472 has joined team 0
(player 0) It's team 1's round
__8472 has taken control over team 1.
music change to space (from David01)
number | entnum | type | inuse | invis | pnum | team | size |  HP | state | level | model/ptl
********************
ERROR: LE_NotFoundError: Could not get LE with entnum 6 (src/client/events/event/actor/e_event_actormove.c:69)

********************
Shutdown server: Server crashed.
==== ShutdownGame ====
./ufo(Sys_Backtrace+0x1f)[0x8192352]
./ufo(Com_Error+0xdf)[0x813f69a]
./ufo(LE_Get+0x0)[0x808cb3d]
./ufo(CL_ActorDoMove+0x44)[0x809c866]
./ufo[0x809ad40]
./ufo(Qcommon_Frame+0x9a)[0x814136b]
./ufo(main+0x66)[0x81910b5]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb777c775]
./ufo[0x8069ff1]
music change to van_geoscape (from space)
Shutdown gametype 'Campaign mode'
Cmd_RemoveCommand: messagetypes_click not added
Cvar 'mn_uprequirement' wasn't found
Cvar 'mn_upmetadata' wasn't found
music change to van_theme (from van_geoscape)

[8472]

again

checksum for the map '+ufocrash': 1407950340
ufo script checksum 1165956792
Not enough spawn points for team 0
Created AI player (team 0)
Created AI player (team 7)
-------------------------------------
Connecting to localhost...
load material file: 'materials/ufocrash.mat'
music change to PsymongO1 (from turinItalyM)
Starting the game...
__8472 has joined team 0
(player 0) It's team 1's round
__8472 has taken control over team 1.
music change to PsymongO3 (from PsymongO1)
number | entnum | type | inuse | invis | pnum | team | size |  HP | state | level | model/ptl
********************
ERROR: LE_NotFoundError: Could not get LE with entnum 18 (src/client/events/event/world/e_event_entperish.c:44)

********************
Shutdown server: Server crashed.
==== ShutdownGame ====
./ufo(Sys_Backtrace+0x1f)[0x8192f52]
./ufo(Com_Error+0xdf)[0x8140032]
./ufo(LE_Get+0x0)[0x808cc79]
./ufo(CL_EntPerish+0x51)[0x809fd35]
./ufo[0x809ae7c]
./ufo(Qcommon_Frame+0x9a)[0x8141d03]
./ufo(main+0x66)[0x8191cb5]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7850775]
./ufo[0x806a141]