Plugin problem in squirrelmail 1.4.2

Dear Friends,

I am facing 2 problem.

1> When i am installing check_quota plugin in squirrelmail 1.4.2. Follow all
setup that given in the file but it is not display quota bar  in
squirrelmail .
2> When I am installing show user name and IP , last login plugin same
problem it is not display it.

I searched on squirrel mail site even in a google also but not getting any
answer so please help me to solve the problem.

-- 
Regards
Jitendra Jha

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