(gdb) bt full
#0  0x00002aabf5bd71d5 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x00002aabf5bd8680 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x000000000040cb1c in C_log (level=C_LOG_ERROR, file=0x41e8f0 "src/render/r_prerender.c", line=104, 
    function=0x41e930 "render_tile", fmt=0x41f4f4 "OpenGL error %d: %s") at src/common/c_log.c:199
	wrapped = 0x6538e0 "*** render_tile(): OpenGL error 1281: invalid value\n"
	margin = 19
	len = 52
	fmt2 = "*** render_tile(): OpenGL error %d: %s\000\000XóÅô«*\000\000 Pæµÿ\177\000\000\000ðÅô«*\000\000º\026@\000\000\000\000\000\000\000\000\000«*\000\000\016\000\000\000\000\000\000\000\020Pæµÿ\177\000\000\213\226Ìm", '\0' <repeats 12 times>, "PcEõ«*\000\000\000°Dõ«*\000"
	buffer = "*** render_tile(): OpenGL error 1281: invalid value\000\b\000\000\000\020\000\000\000\000\000ÿ\000ÿ\000\000\000\b\000\000\000\b\000\000\000\000ÿ\000\000ÿ\000\000\000\b\000\000\000\000\000\000\000ÿ\000\000\000ÿ", '\0' <repeats 27 times>, "\200\000\000\0008\000\000\000\004\000\000\000\000\000\000\000 \000\000\000P׭", '\0' <repeats 13 times>, "ÐMæµÿ\177\000\000pä©\000\000\000\000\000È\003¬\000\000\000\000\000pä©\000\000\000\000\000\020\000\000\000\000\000\000\000\000P\200@", '\0' <repeats 12 times>, "pä©\000\000\000"...
	va = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7fffb5e650b8, 
    reg_save_area = 0x7fffb5e64ff0}}
#3  0x000000000041ad15 in R_check_errors_full (file=0x41e8f0 "src/render/r_prerender.c", line=104, 
    func=0x41e930 "render_tile") at src/render/r_mode.c:295
	gl_error = 1281
	__func__ = "R_check_errors_full"
#4  0x0000000000416709 in render_tile (tx=0, ty=0) at src/render/r_prerender.c:104
	__func__ = "render_tile"
#5  0x0000000000416df6 in prerender_tiles () at src/render/r_prerender.c:212
	blend_mask = (r_texture_t *) 0xbda9b0
	rotated_mask = (r_texture_t *) 0x42100000427c0000
	masked_terrain = (r_texture_t *) 0x0
	i = 1108344832
	x = 0
	y = 0
	__func__ = "prerender_tiles"
#6  0x0000000000417995 in R_prerender () at src/render/r_prerender.c:407
	__func__ = "R_prerender"
#7  0x00000000004163bf in R_load_assets () at src/render/r_assets.c:669
	compiled = {major = 2 '\002', minor = 0 '\0', patch = 9 '\t'}
	linked = (const SDL_version *) 0x2aabf5280c20
	__func__ = "R_load_assets"
#8  0x000000000041ac61 in R_init () at src/render/r_mode.c:265
	__func__ = "R_init"
#9  0x0000000000403866 in main (argc=1, argv=0x7fffb5e652d8) at src/plutocracy.c:207
	autoexec = 0x654b40 "r_width-comment"
	__func__ = "main"