一个QQ号登录提示错误重启程序，发故障诊断代码，求高手解决～～～

同一台电脑，其它QQ号登录正常，唯独一个QQ号，每次登录都提示程序错误重启程序。还有重要的聊天记录在里面没办法导出！！！覆盖重装QQ程序问题依旧！

发故障诊断代码，求高手解决，先行谢过～～～～～～～～～


[异常类型] EXCEPTION_ACCESS_VIOLATION／
[异常地址] 0x6028F47C／
[出错原因]:对地址[0x00000000]进行读操作／操作系统:Microsoft Windows XP Service Pack 2 [Build 5.1.2600]

Registers:
EAX=00000000 EBX=00000000 ECX=600DE118 EDX=0372B688
ESI=00B6C580 EDI=0372D540 EBP=0012D0C0 ESP=0012D070
EIP=6028F47C
Bytes at cs:Eip:
8B 08 FF 51 74 8B 45 E8 3B C3 74 09 8B 08 50 FF 51 08 89 5D E8 8B 45 E4 8D 55 E8 52 50 8B 08 FF

Call stack:
0x60250000[3F47C] CQQApplication.dll:    - 0x6028F47C(0372D540,037291F0,00B6C580,013CE8B0)
0x60250000[3F9D2] CQQApplication.dll:    - 0x6028F9D2(00B6C580,0372D540,037291F0,02FFF3B8)
0x60250000[3FDF8] CQQApplication.dll:    - 0x6028FDF8(00B6C5A4,0372D540,037291F0,0012D3D8)
0x00400000[514D3] QQ.exe:    - 0x004514D3(0012D194,00D67B08,00001F40,02FFF888)
0x00400000[51D8C] QQ.exe:    - 0x00451D8C(00000018,0012D3D8,0012D2DB,0372B454)
0x00400000[5427E] QQ.exe:    - 0x0045427E(00000018,0012D3D8,0012D2DB,0372B454)
0x00400000[5530A] QQ.exe:    - 0x0045530A(00000018,0012D3D8,0012D2DB,0372B454)
0x00400000[5527C] QQ.exe:    - 0x0045527C(00000018,0012D3D8,0012D2DB,0372B454)
0x00400000[559C1] QQ.exe:    - 0x004559C1(0372B454,00000018,0012D3D8,0012D2DB)
0x00400000[4E2C9] QQ.exe:    - 0x0044E2C9(01000000,037B0168,00001F40,00000018)
0x00400000[4E6D7] QQ.exe:    - 0x0044E6D7(00000000,037B0168,00001F40,00000018)
0x00400000[4F3C7] QQ.exe:    - 0x0044F3C7(00000000,037B0168,00001F40,00000018)
0x00400000[4F333] QQ.exe:    - 0x0044F333(00000000,037B0168,00001F40,00000018)
0x00400000[4F59D] QQ.exe:    - 0x0044F59D(036EC51C,00000000,037B0168,00001F40)
0x00400000[60E5F] QQ.exe:    - 0x00460E5F(00000000,037B0168,00001F40,00000018)
0x00400000[61116] QQ.exe:    - 0x00461116(00000000,0012FC38,0046890E,00000000)
0x00400000[4E73A] QQ.exe:    - 0x0044E73A(00000000,00000000,036Ecad0,00000000)
0x00400000[6890E] QQ.exe:    - 0x0046890E(00000000,00000000,036ECAD0,0012FC64)
0x00400000[6888E] QQ.exe:    - 0x0046888E(00000000,0015F9C0,0372D830,0015FA28)
0x60A80000[19F9D] MFC42.DLL:    - 0x60A99F9D(00000778,00000018,00000001,60A99E71)
0X60A80000[19EF6] MFC42.DLL:    - 0x60A99EF6(60A81ED5,00000778,00000001,036EC770)
0X60A80000[19E88] MFC42.DLL:    - 0x60A99E88(00000778,00000001,036EC770,036EC770)
0X60A80000[1ED5] MFC42.DLL:    - 0x60A81ED5(00000373,00000778,60B1C8A8,0012FD20)
0X60A80000[1CEA] MFC42.DLL:    - 0x60A81CEA(00000373,00000778,00000001,0012FE34)
0X60A80000[1C73] MFC42.DLL:    - 0x60A81C73(0000000B,0012FE34,60A81B81,001546B8)
0X60A80000[1018] MFC42.DLL:    - 0x60A81018(00000000,000709E0,00000373,00000778)
0X60A80000[1BFB] MFC42.DLL:    - 0x60A81BFB(000709E0,00000373,00000778,00000001)
0X60A80000[1BBA] MFC42.DLL:    - 0x60A81BBA(000709E0,00000373,00000778,00000001)
0X77D10000[8734] USER32.dll:    - 0x77D18734(60A81B81,000709E0,00000373,00000778)
0X77D10000[8816] USER32.dll:    - 0x77D18816(00000000,60A81B81,000709E0,00000373)
0X77D10000[89CD] USER32.dll:    - 0x77D189CD(005E09D4,00000001,005E09D4,60A811CE)
0X77D10000[96C7] USER32.dll:    - 0x77D196C7(005E09D4,00000000,005E09A0,60A891A4)
0X60A80000[11CE] MFC42.DLL:    - 0x60A811CE(005E09A0,005E09A0,0012FFC0,FFFFFFFF)
0X60A80000[91A4] MFC42.DLL:    - 0x60A891A4(005E09A0,60A8B4FE,00000000,00151EE3)
0X60A80000[9154] MFC42.DLL:    - 0x60A89154(00000000,00151EE3,00000000,0053A9C7)
0X60A80000[B4FE] MFC42.DLL:    - 0x60A8B4FE(00400000,00000000,00151EE3,0000000A)
0X00400000[13A9C7] QQ.exe:    - 0x0053A9C7(00400000,00000000,00151EE3,0000000A)
0X00400000[95BB3] QQ.exe:    - 0x00495BB3(7FFDF000,C0000005,00151EE3,00AF11E0)
0X7C920000[10460] ntdll.dll:    - 0x7C930460(00000000,7C930460,7FFDF000,C0000005)
0X7C800000[16FE7] kernel32.dll:    - 0x7C816FE7(7FFDF000,C0000005,0012FFC8,0012CC94)
0X7C920000[10460] ntdll.dll:    - 0x7C930460(00000000,00000000,00000000,00000000)

更换路径安装呢？

如果更换路径安装聊天记录能自动导入吗？因为QQ是较老的版本，不想换新版本。
我最怕丢掉聊天记录了。但其他QQ号登录正常。

换了新版本的也丢不了的

先不要卸载直接在其他盘安装运行新版QQ打开会自动转移资料  聊天记录什么的不会丢  
恭喜问题解决

问题解决了。
把如图内几个文件剪切备份后，然后删除此号的文件夹，再用此号登录一次，然后退出登录，用先前剪切的文件覆盖新号内的文件，最后试登录，所有的聊天记录都在，自定义表情那些都在。只是需要重新设置一些个人设置和系统设置等等。

只是错误的原因仍然不明白。

我一般这种情况
下了再上...

QQ聊天记录的文件应该是Msg打头的数据库文件,后缀是.db，把这个文件复制到其他地方，然后再删除这个QQ号码的文件夹，然后再登陆QQ，再把刚刚的MSG的文件覆盖了