Ubuntu 18.04.3 / Nvidia 970M / Core dump early on

Update: problem did indeed exist between keyboard and chair. Player.log noted ZFGameBrowser had an issue. Quick examination showed a few unresolved dependencies.

Solution for the user:
1. find . -iname "*so" -print -exec ldd '{}' \; | grep "^\./\|not\ found" # find packages /w issues
2. resolve dependencies.

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Last month, I installed some variant of 18.04.3, an Nvidia driver (possibly from ppa), and shroud of the avatar (.tgz package), and everything just worked. I have since reinstalled Ubuntu on the same hardware and have had quite the time getting SotA to run. If anyone has a clue as to what I might have done differently to shoot myself in the foot, any clues would be appreciated. Drivers 390, 418, and 430 all cough up the same core dump. 435 (beta) doesn't fare much better, but did seem to require a kill -9 (so no great backtrace). I assume the "can't find steamclient.so" is not a fatal error, but if it is, that would be good to know.

In the Nvidia-390/418/430 style core dump below,
* Top of the stacktrace: /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so(+0xd5268) [0x7fd7585cd268]
* Thread [1] (Active): /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so(+0xd5268) [0x7fd7585cd268]
* Thread [37] (Exiting) /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so(+0xd5268) [0x7fd7585cd268]

signal in thread 37, around the address listed at the top of the stacktrace.
#1 0x00007fd7585cd323 in ?? () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#2 <signal handler called>
#3 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#4 0x00007fd760221801 in __GI_abort () at abort.c:79
#5 0x0000000000d2c3a6 in ?? ()
#6 0x00007fd7586468ee in ?? () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#7 0x00007fd758553df1 in ?? () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#8 <signal handler called>
#9 0x00007fd761548ac8 in elf_machine_rela (skip_ifunc=0, reloc_addr_arg=0x7fd756185f40, version=0x48, sym=0x7fd755e74530, reloc=0x7fd755e89d10, map=0x363c4e0) at ../sysdeps/x86_64/dl-machine.h:308
#10 elf_dynamic_do_Rela (skip_ifunc=0, lazy=<optimized out>, nrelative=<optimized out>, relsize=<optimized out>, reladdr=<optimized out>, map=0x363c4e0) at do-rel.h:137
#11 _dl_relocate_object (scope=<optimized out>, reloc_mode=reloc_mode@entry=0, consider_profiling=<optimized out>, consider_profiling@entry=0) at dl-reloc.c:258
#12 0x00007fd7615510bd in dl_open_worker (a=a@entry=0x7fd6c1ec0a50) at dl-open.c:382
#13 0x00007fd7603482df in __GI__dl_catch_exception (exception=exception@entry=0x7fd6c1ec0a30, operate=operate@entry=0x7fd761550dc0 <dl_open_worker>, args=args@entry=0x7fd6c1ec0a50) at dl-error-skeleton.c:196
#14 0x00007fd7615507ca in _dl_open (file=0x7fd7605e6bc0 "libgcc_s.so.1", mode=-2147483646, caller_dlopen=0x7fd7605e4deb <pthread_cancel_init+43>, nsid=<optimized out>, argc=1, argv=<optimized out>, env=0x7ffef89a7f58) at dl-open.c:605
#15 0x00007fd7603473ad in do_dlopen (ptr=ptr@entry=0x7fd6c1ec0c80) at dl-libc.c:96
#16 0x00007fd7603482df in __GI__dl_catch_exception (exception=exception@entry=0x7fd6c1ec0c20, operate=operate@entry=0x7fd760347370 <do_dlopen>, args=args@entry=0x7fd6c1ec0c80) at dl-error-skeleton.c:196
#17 0x00007fd76034836f in __GI__dl_catch_error (objname=objname@entry=0x7fd6c1ec0c70, errstring=errstring@entry=0x7fd6c1ec0c78, mallocedp=mallocedp@entry=0x7fd6c1ec0c6f, operate=operate@entry=0x7fd760347370 <do_dlopen>, args=args@entry=0x7fd6c1ec0c80) at dl-error-skeleton.c:215
#18 0x00007fd7603474d9 in dlerror_run (args=0x7fd6c1ec0c80, operate=0x7fd760347370 <do_dlopen>) at dl-libc.c:46
#19 __GI___libc_dlopen_mode (name=name@entry=0x7fd7605e6bc0 "libgcc_s.so.1", mode=mode@entry=-2147483646) at dl-libc.c:195
#20 0x00007fd7605e4deb in pthread_cancel_init () at ../sysdeps/nptl/unwind-forcedunwind.c:52
#21 0x00007fd7605e4fd4 in _Unwind_ForcedUnwind (exc=0x7fd6c1ec1d70, stop=0x7fd7605e2d80 <unwind_stop>, stop_argument=0x7fd6c1ec0e50) at ../sysdeps/nptl/unwind-forcedunwind.c:126
#22 0x00007fd7605e2f10 in __GI___pthread_unwind (buf=<optimized out>) at unwind.c:121
#23 0x00007fd7605daae5 in __do_cancel () at pthreadP.h:297
#24 __pthread_exit (value=<optimized out>) at pthread_exit.c:28
#25 0x00007fd75871d197 in ?? () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#26 0x00007fd7586d89fa in ?? () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#27 0x00007fd758739baf in GC_inner_start_routine () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#28 0x00007fd75872eb97 in GC_call_with_stack_base () from /home/noobuser/SotA/Shroud of the Avatar_Data/MonoBleedingEdge/x86_64/libmonobdwgc-2.0.so
#29 0x00007fd7605d96db in start_thread (arg=0x7fd6c1ec1700) at pthread_create.c:463
#30 0x00007fd76030288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95