Dear all

I am installing rt on rhel4 the installation is done successfully but I am getting the below mentioned error when I try to browse the frontend. I checked all services they are getting restarted properly. No errors in error.log also.
Can anyone please help me on this !!!!!!!!!!!!!!!!!!!!!!!!!!

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error: mkdir /opt/rt3/var/mason_data/obj: Permission denied at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Compiler/ToObject.pm line 102
context:
...
197: # whether they should generate a full stack trace (confess() and cluck())
198: # or simply report the caller's package (croak() and carp()), respectively.
199: # confess() and croak() die, carp() and cluck() warn.
200:
201: sub croak { die shortmess @_ }
202: sub confess { die longmess @_ }
203: sub carp { warn shortmess @_ }
204: sub cluck { warn longmess @_ }
205:
...
code stack: /usr/lib/perl5/5.8.5/Carp.pm:201
/usr/lib/perl5/5.8.5/File/Path.pm:162
/usr/lib/perl5/5.8.5/File/Path.pm:155
/usr/lib/perl5/5.8.5/File/Path.pm:155
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Compiler/ToObject.pm:102
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Interp.pm:434
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm:239
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm:205
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/ApacheHandler.pm:97
/usr/lib/perl5/site_perl/5.8.5/Class/Container.pm:275
/usr/lib/perl5/site_perl/5.8.5/Class/Container.pm:353
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Interp.pm:348
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/ApacheHandler.pm:869
/usr/lib/perl5/site_perl/5.8.5/HTML/Mason/ApacheHandler.pm:823
/opt/rt3/bin/webmux.pl:123
-e:0
raw error
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