为什么我开不了QQ!!

也不知道为什么,总是开不了!一开就自动给我重启!
错误信息如下:

Microsoft Windows XP Service Pack 2 [Build 5.1.2600]

QQ 15.73.420 0AC810327D3D270BD3EC5E1323D144B2
-----------------------------------
Type: EXCEPTION_ACCESS_VIOLATION
Address: 0x609C8244
Error: Read address 0x00000000

Call stack:
0x609B0000[18244] LongConnection.dll: (54599104,14638032,1469784,1468816)
0x609B0000[D634] LongConnection.dll: (78702128,54599104,54599104,1231856)
0x00400000[636F3] QQ.exe: (1,15284292,1469784,1468816)
0x00400000[630B2] QQ.exe: (14638064,54599104,1232076,54599104)
0x00400000[67C2C] QQ.exe: (54599104,1232076,35251128,14637104)
0x00400000[677EA] QQ.exe: (54599104,1559756,1232096,1469784)
0x00400000[656F4] QQ.exe: (14637140,54599104,1232076,1232676)
0x00400000[37AE8] QQ.exe: (54599104,54602832,0,35252336)
0x00400000[37EEA] QQ.exe: (184,1232676,1232423,54599508)
0x00400000[3A418] QQ.exe: (184,1232676,1232423,54599508)