Apostrophe char gives rejected rate

[free]

Hello everyone,

I've create copy one of charset file and add at the end new chars: 1234567890!@#$%^&*()-_=+;:|\~`"'{}[]?<>,.

It should be like "all" but for needed charset.

Runs as:
oclHashcat-plus64.exe ... -a 3 -2 charsets\standard\<name>\<file name>.hcchr ?2?2?2?2?2?2

as you can see here only 6-digit mask. And this mask actually works.
But I get ~8% of "rejected" passwords because of Apostrophe char.

Could some explain why apostrophe is a "bad" char?

[mastercracker]

You might need to escape it.