I have installed this and at the top I got this error:

// (BOF - 2.1) Responsive DIY Template Default for 1.5.x (65) if (COLUMN_WIDTH == '0' || (in_array($current_page_base,explode(",",'popup_image,popup_image_additional')) )) { echo ''; } else { $responsive_mobile = ''; require($template->get_template_dir('responsive_mobile.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/responsive_mobile.php'); $responsive_tablet = ''; require($template->get_template_dir('responsive_tablet.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/responsive_tablet.php'); $responsive_default = ''; echo ''; if ($detect->isMobile() && !$detect->isTablet() or $detect->isMobile() && !$detect->isTablet() && $_SESSION['display_mode']=='isMobile' or $detect->isTablet() && $_SESSION['display_mode']=='isMobile' or $_SESSION['display_mode']=='isMobile') { echo $responsive_mobile; } else if ($detect->isTablet() or $detect->isMobile() && $_SESSION['display_mode']=='isTablet' or $detect->isTablet() && $_SESSION['display_mode']=='isTablet' or $_SESSION['display_mode']=='isTablet'){ echo $responsive_tablet; } else if ($detect->isMobile() && !$detect->isTablet() && $_SESSION['display_mode']=='isDesktop' or $detect->isTablet() && $_SESSION['display_mode']=='isDesktop' or $_SESSION['display_mode']=='isNonResponsive'){ echo ''; } else { echo $responsive_default; } } if($detect->isMobile() && !$detect->isTablet() && $_SESSION['display_mode']=='isDesktop' or $detect->isTablet() && $_SESSION['display_mode']=='isDesktop' or $detect->isMobile() && !$detect->isTablet() && $_SESSION['display_mode']=='isNonResponsive' or $detect->isTablet() && $_SESSION['display_mode']=='isNonResponsive' or $_SESSION['display_mode']=='isNonResponsive'){ $fluidisFixed = 'fluidIsFixed'; } else { $fluidisFixed = ''; } // (EOF - 2.1) Responsive DIY Template Default for 1.5.x (65) ?>