I had the same problem
it happens when I click the skills button or the Alt+S shortcut. all the other buttons work fine.
I have the client from RMS test server download section, but I already had a sakray from other server. I just copied the whole folder and insert the new client.
Hope someone can help, thanks
Module Name: C:\Archivos de programa\Copia (3) de RebirthRO\rmserver.exe
Time Stamp: 0x491be615 - Thu Nov 13 02:32:21 2008
Exception Type: 0xc0000005
0x004af5bf rmserver.exe
0x004e47a4 rmserver.exe
0x004eb4b2 rmserver.exe
0x0057c4d3 rmserver.exe
0x0057c284 rmserver.exe
0x0069b074 rmserver.exe
0x006afe0a rmserver.exe
0x7c817077 kernel32.dll
eax: 0x00000000 ebx: 0x00c3c3c3
ecx: 0x04b00e88 edx: 0x00000118
esi: 0x04b1ef10 edi: 0x00000011
ebp: 0x0012fb6c esp: 0x0012fb08
stack 0012fb08 - 0012ff08
0012FB08 : A0 B7 76 00 10 E5 A4 07 10 EF B1 04 00 00 44 3F
0012FB18 : 00 00 71 3F 00 00 80 43 00 00 00 00 00 00 8C 43
0012FB28 : 00 00 F0 42 80 00 00 00 00 00 00 00 70 FB 12 00
0012FB38 : 14 39 40 00 00 00 00 43 00 00 00 00 18 00 00 00
0012FB48 : 78 00 00 00 FF FF FF FF B8 E6 59 04 A0 69 6A 04
0012FB58 : 7C F6 6C 00 00 00 00 00 00 01 00 00 18 FF FF FF
0012FB68 : 78 00 00 00 80 FB 12 00 A4 47 4E 00 10 E5 A4 07
0012FB78 : 10 EF B1 04 A0 B7 76 00 B8 FB 12 00 B2 B4 4E 00
0012FB88 : 00 00 00 00 08 50 3D 04 02 00 00 00 4F 4E B0 76
0012FB98 : 03 00 00 00 FD 02 00 00 52 02 00 00 E0 00 00 00
0012FBA8 : 00 00 00 00 00 00 00 66 00 00 00 00 A0 B7 76 00
0012FBB8 : DC FB 12 00 D3 C4 57 00 8B EF 78 00 08 50 3D 04
0012FBC8 : 78 EF 78 00 89 00 62 00 F6 12 7D 05 F8 FB 12 00
0012FBD8 : 44 97 6C 00 04 FC 12 00 84 C2 57 00 B3 EF 78 00
0012FBE8 : 7C 3E 51 00 FC FE 12 00 48 B0 72 00 00 00 00 00
0012FBF8 : B0 FF 12 00 36 83 6C 00 FF FF FF FF 34 FF 12 00
Launch Info
014B 008C 004D 0174 01C2 014B 014B 014B
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
Job : Paladin