[Koha] Error message about koha3

Hi I have installed koha.When I access OPAC web interface with ie7，there is webpage error in the left down corner. And there are some error msg in apache error log. Error msg: opac-search.pl:PARAM:LOOP:next_loop:hash pointer was expected but not found at /usr/local/lib/perl/5.8.8/HTML/Template/Pro.pm line 191. opac-main.pl: PARAM:LOOP:next_loop:hash pointer was expected but not found at /usr/local/lib/perl/5.8.8/HTML/Template/Pro.pm line 191. Platform: Debian4 koha version : koha 3.0000094 HTML::Template::Pro version : 0.71 How to solve it? Thanks Best regards, Wilson