return to home page after Chose Filter Results by manufacturers option in subdirector

as the title,my site return to home page after Chose Filter Results by manufacturers option in subdirector,but it can work in first catalog,
Please help me to fix this mistake,i used lightinthebox edition,and the subdirector url as www.xxxx.com/xxx-xxx-xxx_c2 ,if in other edition,it will as www.xxxx.com/xxx-xxx-xxx-c-1_2,
and if in the first catalog as www.xxxx.com/xxx-xxx_c1 , the filter results by manufacturers work fine.

So please help me,I'm happy waiting your help.
Thanks

Anyone can help me?My site www.brandexporter.com

who can help me for this problem.
Thanks