SmartFtp exits automatically.

I have encountered a strange problem, smartFtp always sudden exit automatically. I do not think it is a bug of your software, it should be some software I have installed confict with smartFtp. But I cannot find it.
Do you have any suggestion?
Thanks.

+- System -----------------------------
Microsoft Windows XP Professional
Service Pack 2 (Build 2600)

CPU Speed : 993 MHz
Total Memory : 261100 KB
Free Memory : 81868 KB

+- SmartFTP ---------------------------
Version : 2.0.996.7
Time Stamp : 2006-04-06 22:54:09
Platform : x86

+- Application DLL --------------------
sfFTPLib.dll : 1.5.8.3
SmartHook.dll : 1.0.2.1

+- Language ---------------------------
SmartFTPCHS.dll : 2.0.996.6

+- System DLL -------------------------
unicows.dll : 1.0.4018.0
shell32.dll : 6.00.2900.2763 (xpsp_sp2_gdr.050922-1642)
shlwapi.dll : 6.00.2900.2781 (xpsp_sp2_gdr.051020-1730)
comctl32.dll : 6.0 (xpsp_sp2_rtm.040803-2158)
riched20.dll : 5.30.23.1221
schannel.dll : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)

+- Internet Explorer ------------------
Version : 6.0.2900.2180

+- Winsock ----------------------------
Winsock : 2.2

Please explain *exactly* how you are able to reproduce the problem on your machine.

These two days, it seems no such thing happens.

Thanks.


If it happens again, I will try to catch it.