problem with X-factor

I have get some pass by AD,and when i check these pass manually,the pass works,but when i used X-factor check them,X-factor said the pass don't work,in fact the pass is active!!!!why this happen?

[sPlico]

X-factor is a bit outdated, so it misses on some good ones.

[d1player]

XISP crew guys are awesome, but I don't like X-Factor.
I think C-Force - http://carpetboy.deny.de/ - can check your passes better. It still give some fakes, but It's more accuracy than X-Factor and faster.
Also Sentinel made Scholar: http://sentinel.deny.de/scholar.htm to check histories...