view next page not work

[scriptlover]

hello

i have a strange problem

i have 8 category in my osc every one have many item

some of it if you click to next to see other page is work

other category next link is not work at all

i dont know why

by the way its not to lean on number of product per category

some category have may be 300 item and browsing work good and other may be have 50 item and not work

[scriptlover]

help plz