RustClient.exe caused an Access Violation (0xc0000005) (Rust)

What to do ? not understand nothing . Immediately thank you to those who help .
Unity Player [version: Unity 5.6.0f3_497a0f351392]

RustClient.exe caused an Access Violation (0xc0000005)
in module RustClient.exe at 0033:00000000.

Error occurred at 2017-08-21_005626.
C:\Program Files (x86)Steam\steamapps\common\Rust\RustClient.exe, run by Alexander.
52% memory in use.
8191 MB physical memory [3874 MB free].
16385 MB paging file [12107 MB free].
8388608 MB user address space [8388299 MB free].
Write to location 00000000 caused an access violation.

Context:
RDI: RSI 0x00000000: 0x06a86830 RAX: 0x00000000
RBX: RCX 0x0000000c: 0x0000007f RDX: 0x00000000
RIP: 0x00000000 RBP: 0x0031f480 SegCs: 0x00000033
EFlags: 0x00010206 RSP: 0x0031f308 SegSs: 0x0000002b
R8: 0x40229508 R9: R10 0x00000007: 0xee30f930
R11: 0x00000077 R12: R13 0x00010000: 0x65011671
R14: 0x080b0d70 R15: 0x00000000

Bytes at CS:EIP:
?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??

Stack:
0x0031f308: 3f9e71a4 00000001 0000000c 00000000 .q.?............
0x0031f318: 00000000 00000000 00000000 06a86830 ........0h......
0x0031f328: 00000000 00000000 0000000c 00000000 ................
0x0031f338: 3f9e7490 00000001 0000000c 00000000 .t.?............
0x0031f348: 00000001 00000000 00000000 00000000 ................
0x0031f358: 06a86830 00000023 00000000 00000000 0h..........#...
0x0031f368: 00000000 00000001 00000020 00000000 ........ .......
0x0031f378: 00000020 00000001 00000000 00000000 ...............
0x0031f388: 00000000 00000000 00000000 00000000 ................
0x0031f398: 00000000 00000000 00000001 00000000 ................
0x0031f3a8: 0000000c 00000000 06a8a090 00000000 ................
0x0031f3b8: 00000001 3f9e7be3 000c07b4 00000000 .{.?............
0x0031f3c8: 080b0d70 00000000 00000000 06a8a090 p...............
0x0031f3d8: 00000024 00000000 00000001 00000001 $...............
0x0031f3e8: 00000000 00000001 00000020 00000000 ........ .......
0x0031f3f8: 00000020 00000000 00000000 00000000 ...............
0x0031f408: 00000000 00000000 3f080000 00000001 ...........?....
0x0031f418: 00000000 00000000 00000000 00000000 ................
0x0031f428: 0000000c 00000000 06a86860 00000000 ........`h......
0x0031f438: 3f894f0e 00000001 00000001 4050dd70 .O.?....p.P@....
0x0031f448: 00000000 00000000 0000000c 00000000 ................
0x0031f458: 00000000 00000000 0031f509 00000000 ..........1.....
0x0031f468: 3fa14be1 00000001 00000000 080b0d70 .K.?....p.......
0x0031f478: 00000000 00000000 00000000 00000000 ................
0x0031f488: 00000011 00000000 00000000 00000000 ................
0x0031f498: 00000000 00000000 00000001 00000000 ................
0x0031f4a8: fd3637aa 00000000 000007fe 080b34b8 .76......4......
0x0031f4b8: 00000011 00000000 00000000 00000000 ................
0x0031f4c8: 00000000 00000000 06a86860 00000000 ........`h......
0x0031f4d8: 00000011 00000000 00000000 00000000 ................
0x0031f4e8: 00000011 00000000 00000042 00000000 ........B.......
0x0031f4f8: 00000001 3f35d9f8 080b34b8 00000000 ..5?.....4......
0x0031f508: 3f0810b9 00000001 00000000 00000000 ...?............
0x0031f518: 3f895520 4013424c 00000001 00000001 U.?....LB.@....
0x0031f528: 0000004e 00000000 00000000 080b4258 N.......XB......
0x0031f538: 3fa159a8 00000001 00000000 080b0d70 .Y.?....p.......
0x0031f548: 00000011 00000000 00000000 00000000 ................
0x0031f558: 00000000 00000000 00000011 00000000 ................
0x0031f568: 3fa0d055 00000001 00000000 00000000 U..?............
0x0031f578: 0000000c 00000000 00000000 00000000 ................
0x0031f588: 00000000 00000000 00000001 4013424c ........LB.@....
0x0031f598: 00000077 00000001 00000001 00000000 w...............
0x0031f5a8: 00000001 3f3bc02e 078b12f0 00000000 ..;?............
0x0031f5b8: 00000017 00000000 00000000 00000000 ................
0x0031f5c8: 4013424c 00000001 00000001 00000000 LB.@............
0x0031f5d8: 00000001 00000000 00000000 00000000 ................
0x0031f5e8: 3f3cb206 00000001 00000000 080af340 ..