id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
7172,unhandled exception,randall okwei,,"Unhandled exception at 0x671ac07e in VirtualBox.exe: 0xC0000005: Access violation writing location 0x000000000286e6b0.

What can i do?

It looks like the call stack stopped with >	QtCoreVBox4.dll!00000000671ac07e() 

disassembly showed:

00000000671AC059 pop rdi 
00000000671AC05A ret 
00000000671AC05B int 3 
00000000671AC05C int 3 
00000000671AC05D int 3 
00000000671AC05E int 3 
00000000671AC05F int 3 
00000000671AC060 mov rax,qword ptr [rcx+78h] 
00000000671AC064 mov qword ptr [rcx+78h],rdx 
00000000671AC068 ret 
00000000671AC069 int 3 
00000000671AC06A int 3 
00000000671AC06B int 3 
00000000671AC06C int 3 
00000000671AC06D int 3 
00000000671AC06E int 3 
00000000671AC06F int 3 
00000000671AC070 test r8d,r8d 
00000000671AC073 jne 00000000671AC079 
00000000671AC075 mov qword ptr [rcx+78h],rdx 
00000000671AC079 test rdx,rdx 
00000000671AC07C je 00000000671AC081 
00000000671AC07E mov dword ptr [rdx],r8d <----Arrow here
00000000671AC081 ret 0 
00000000671AC084 int 3 
00000000671AC085 int 3 
00000000671AC086 int 3 
00000000671AC087 int 3 
00000000671AC088 int 3 
00000000671AC089 int 3 
00000000671AC08A int 3 
00000000671AC08B int 3 
00000000671AC08C int 3 
00000000671AC08D int 3 
00000000671AC08E int 3 
00000000671AC08F int 3 
00000000671AC090 mov qword ptr [rsp+8],rbx 
00000000671AC095 mov qword ptr [rsp+10h],rbp 
00000000671AC09A mov qword ptr [rsp+18h],rsi 
00000000671AC09F push rdi 
00000000671AC0A0 sub rsp,20h 
00000000671AC0A4 mov ebx,edx 
00000000671AC0A6 mov edx,2Bh 
00000000671AC0AB mov esi,r9d 
00000000671AC0AE mov rdi,r8

",defect,closed,other,VirtualBox 3.2.6,obsolete,,,Windows,Windows