R28183: I received similar message, just with another texture. And it kicks me out back to geoscape, without black screen:
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ERROR: Texture is already freed and no longer uploaded, texnum is invalid for model models/aircraft/drop_firebird/firebird.md2
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Shutdown server: Server crashed.
==== ShutdownGame ====
ufoai_2.3/src/ports/unix/unix_main.c:493
ufoai_2.3/src/common/common.c:267
ufoai_2.3/src/client/renderer/r_model.c:330
ufoai_2.3/src/client/renderer/r_entity.c:616
ufoai_2.3/src/client/renderer/r_main.c:318
ufoai_2.3/src/client/battlescape/cl_view.c:376
ufoai_2.3/src/client/cl_screen.c:445
ufoai_2.3/src/client/cl_main.c:1142
ufoai_2.3/src/common/common.c:1010
ufoai_2.3/src/common/common.c:1158
ufoai_2.3/src/ports/linux/linux_main.c:53
/lib/libc.so.6(__libc_start_main+0xe6)[0x7f14affae5a6]
/build/buildd/glibc-2.9/csu/../sysdeps/x86_64/elf/start.S:116
music change to van_geoscape (from defeatfear)