Can not add second subclass (1 Viewer)

[Kaross778]

Hi, i reached sub 75, and now cant add second sub.
How to fix it?
I have got this message bellow.

" alt="Shot00004[/IMG]

 

[FAFASfafs]

Main= Grand Khavatori

+Subs
Warlord 75
Warcryer 40 !!!