Please post full logs.
And since you're on Mac, it was useful if you would mention your OS in Support threads, because Windows is default OS =)
I re-downloaded the entire application, and it was working for about a week. I started to encounter the problem again today. Here's the log
Process: Jedi Academy MP [3312]
Path: /Users/USER/Library/Application Support/Steam/*/SWJKJA.app/Contents/Jedi Academy MP.app/Contents/MacOS/Jedi Academy MP
Identifier: com.aspyr.jediacademy.mp.steam
Version: 1.0.1 (114239)
Code Type: X86 (Native)
Parent Process: ??? [1]
Responsible: Jedi Academy MP [3312]
User ID: 501
Date/Time: 2017-12-31 18:50:51.515 -0500
OS Version: Mac OS X 10.13.2 (17C88)
Report Version: 12
Anonymous UUID: B46E4763-3D99-EF5D-35D4-B7B6D56D12CC
Sleep/Wake UUID: 36A4B8BE-CFC1-4868-8031-FC8103155748
Time Awake Since Boot: 18000 seconds
Time Since Wake: 410 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
terminating with uncaught exception of type char*
abort() called
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0xa76aceae __pthread_kill + 10
1 libsystem_pthread.dylib 0xa77de4c7 pthread_kill + 363
2 libsystem_c.dylib 0xa75fcafe abort + 133
3 libc++abi.dylib 0xa5a89ea7 abort_message + 134
4 libc++abi.dylib 0xa5a8a080 default_terminate_handler() + 272
5 libc++abi.dylib 0xa5aa3657 std::__terminate(void (*)()) + 14
6 libc++abi.dylib 0xa5aa30c1 __cxa_throw + 116
7 com.aspyr.jediacademy.mp.steam 0x00008087 0x1000 + 28807
8 com.aspyr.jediacademy.mp.steam 0x0002a26e 0x1000 + 168558
9 com.aspyr.jediacademy.mp.steam 0x0017a614 0x1000 + 1545748
10 cgame 0x2581a979 trap_Error + 41
11 cgame 0x257acec3 CG_Error + 147
12 cgame 0x257ca4f8 CG_LoadClientInfo + 3064
13 cgame 0x257d0375 CG_NewClientInfo + 7925
14 cgame 0x257b6287 CG_RegisterClients + 55
15 cgame 0x257abfbc CG_Init + 4012
16 cgame 0x257aa8ed vmMain + 189
17 com.aspyr.jediacademy.mp.steam 0x0001f9b9 0x1000 + 125369
18 com.aspyr.jediacademy.mp.steam 0x000285cd 0x1000 + 161229
19 com.aspyr.jediacademy.mp.steam 0x0003d935 0x1000 + 248117
20 com.aspyr.jediacademy.mp.steam 0x0003db3a 0x1000 + 248634
21 com.aspyr.jediacademy.mp.steam 0x0003e80a 0x1000 + 251914
22 com.aspyr.jediacademy.mp.steam 0x0003f40b 0x1000 + 254987
23 com.aspyr.jediacademy.mp.steam 0x0003d2ff 0x1000 + 246527
24 com.aspyr.jediacademy.mp.steam 0x00068eaf 0x1000 + 425647
25 com.aspyr.jediacademy.mp.steam 0x00068f55 0x1000 + 425813
26 com.aspyr.jediacademy.mp.steam 0x00113c6d 0x1000 + 1125485
27 com.apple.HIToolbox 0x92f61319 TimerVector + 19
28 com.apple.CoreFoundation 0x93955533 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19
29 com.apple.CoreFoundation 0x939550a8 __CFRunLoopDoTimer + 1224
30 com.apple.CoreFoundation 0x93954b1b __CFRunLoopDoTimers + 395
31 com.apple.CoreFoundation 0x9394c75b __CFRunLoopRun + 3211
32 com.apple.CoreFoundation 0x9394b7a1 CFRunLoopRunSpecific + 641
33 com.apple.CoreFoundation 0x9394b50a CFRunLoopRunInMode + 122
34 com.apple.HIToolbox 0x92f4a42b RunCurrentEventLoopInMode + 321
35 com.apple.HIToolbox 0x92f4a152 ReceiveNextEventCommon + 777
36 com.apple.HIToolbox 0x930c6632 _AcquireNextEvent + 58
37 com.apple.HIToolbox 0x930b7eac RunApplicationEventLoop + 174
38 com.aspyr.jediacademy.mp.steam 0x0011828a 0x1000 + 1143434
39 com.aspyr.jediacademy.mp.steam 0x00028449 0x1000 + 160841
Thread 1:
0 libsystem_kernel.dylib 0xa76ad6ee __workq_kernreturn + 10
1 libsystem_pthread.dylib 0xa77db090 _pthread_wqthread + 1536
2 libsystem_pthread.dylib 0xa77daa6a start_wqthread + 34
Thread 2:: com.apple.audio.IOThread.client
0 libsystem_kernel.dylib 0xa76a3742 mach_msg_trap + 10
1 libsystem_kernel.dylib 0xa76a2d7f mach_msg + 47
2 com.apple.audio.CoreAudio 0x93529da4 HALB_MachPort::SendMessageWithReply(unsigned int, unsigned int, unsigned long, unsigned long, mach_msg_header_t*, bool, unsigned int) + 124
3 com.apple.audio.CoreAudio 0x93503413 HALB_MachPort::SendSimpleMessageWithSimpleReply(unsigned int, unsigned int, int, int&, bool, unsigned int) + 49
4 com.apple.audio.CoreAudio 0x9350035c HALC_ProxyIOContext::IOWorkLoop() + 1600
5 com.apple.audio.CoreAudio 0x934ffac2 HALC_ProxyIOContext::IOThreadEntry(void*) + 236
6 com.apple.audio.CoreAudio 0x93533151 invocation function for block in HALC_ProxyIOContext::HALC_ProxyIOContext(unsigned long, unsigned int) + 20
7 com.apple.audio.CoreAudio 0x934ff98b HALB_IOThread::Entry(void*) + 71
8 libsystem_pthread.dylib 0xa77db50d _pthread_body + 347
9 libsystem_pthread.dylib 0xa77db3b2 _pthread_start + 357
10 libsystem_pthread.dylib 0xa77daa8e thread_start + 34
Thread 3:
0 libsystem_kernel.dylib 0xa76ad6ee __workq_kernreturn + 10
1 libsystem_pthread.dylib 0xa77db090 _pthread_wqthread + 1536
2 libsystem_pthread.dylib 0xa77daa6a start_wqthread + 34
Thread 4:
0 libsystem_kernel.dylib 0xa76ad6ee __workq_kernreturn + 10
1 libsystem_pthread.dylib 0xa77db090 _pthread_wqthread + 1536
2 libsystem_pthread.dylib 0xa77daa6a start_wqthread + 34
Thread 5:
0 libsystem_pthread.dylib 0xa77daa48 start_wqthread + 0
1 ??? 0x3b808081 0 + 998277249
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x00000000 ebx: 0xa9ae41c0 ecx: 0xbffec7fc edx: 0x00000000
edi: 0xa77de36a esi: 0x0000002d ebp: 0xbffec828 esp: 0xbffec7fc
ss: 0x00000023 efl: 0x00200206 eip: 0xa76aceae cs: 0x0000000b
ds: 0x00000023 es: 0x00000023 fs: 0x00000000 gs: 0x0000000f
cr2: 0xa9ac9330
Logical CPU: 0
Error Code: 0x00080148
Trap Number: 132
If you need anything else, please let me know, as I'm not sure if there's something specific I'm not including here. Thanks.