(next) Dedicated servers crash when starting up

happens sense !2100 (merged) I am no longer able to set up a dedicated server, and crashes with

An error occurred within SRB2! Send this stack trace to someone who can help!
(Or find crash-log.txt in your SRB2 directory.)

Backtrace:
bin/lsdl2srb2.debug(+0x854a0)[0x564a1f3d94a0]
bin/lsdl2srb2.debug(+0x855c8)[0x564a1f3d95c8]
/usr/lib/libc.so.6(+0x3e710)[0x7feec4e82710]
/usr/lib/libc.so.6(+0x1696c7)[0x7feec4fad6c7]
bin/lsdl2srb2.debug(R_SkinAvailable+0x42)[0x564a1f57c912]
bin/lsdl2srb2.debug(D_SRB2Main+0x7ac)[0x564a1f41170c]
bin/lsdl2srb2.debug(main+0x54)[0x564a1f3d8964]
/usr/lib/libc.so.6(+0x27cd0)[0x7feec4e6bcd0]
/usr/lib/libc.so.6(__libc_start_main+0x8a)[0x7feec4e6bd8a]
bin/lsdl2srb2.debug(_start+0x25)[0x564a1f3d8b95]
Process killed by signal: SIGSEGV (core dumped)

/home/bitten2up/srb2/src/sdl/i_system.c:315
/home/bitten2up/srb2/src/sdl/i_system.c:821
??:0
/home/bitten2up/srb2/src/p_inter.c:2478 (discriminator 3)
/home/bitten2up/srb2/src/r_skins.c:303 (discriminator 1)
/home/bitten2up/srb2/src/d_main.c:1633
/home/bitten2up/srb2/src/sdl/i_main.c:219
??:0
??:0
??:?

on f3c2fb50