Oleg Dudkin

@pixelyzed
Can you do the same thing Ken did? I mean enable plugin for a moment and post any errors that occur.

The only new feature added to plugin code was using output buffer. It do can interfere with caching plugins which use output buffers and custom error handlers.
It would be great if you will confirm it by checking your error logs. Thanks.

Thanks Ken!
It is very important to know what is the reason for that error. Now it will be much easier to fix plugin.

@stevecas
It can be sorted out easily. But Kens problem looks completely different than yours.

Hi, Ken
Is it possible to disable Google PageSpeed temporarily just to check? It uses apache module that produces the error.

Do you use any page speed optimisers? Plugins or hosting options maybe?
Seems like this error comes from page speed apache module.

“PHP Notice” error level can’t bring site down. Or at least it should not.

@pixelyzed,
What hosting do you use? Seems like it’s not a problem with PHP 5.4

Same thing here.
PHP 5.4.12 giving Error 500 on the front end when the plugin is activated.

Hi,
What do you mean by “PHP script interferes with my slidetoggle function”?
What exactly happens and what is expected, maybe you can post link to your site?
JavaScript can’t interfere with PHP in any way. If you have JavaScript error, that’s probably conflict between two JavaScript scripts. If you have wrong HTML generated by PHP – problem is in PHP and there is nothing to do with JavaScript.
You probably should post that part of JavaScript where you call slideToggle and part of PHP code that generates HTML of that section that needs to be toggled.

Actually, you can edit anything you want in wordpress. And it depends only on your programming skills wether it will work on not. And also you will loose ability to update and possible use some plugins.

It is much easier to use wordpress API. Just open functions.php of your theme and create any functions you want. Find appropriate hooks in Codex and link your functions to events you want to replace.

It’s more likely that mp3-jplayer plugin is broken.
Just deactivate it by renaming plugin folder via FTP.
Also you can try to type /wp-admin/ In addressbar after getting this error and probably you’l get dashboard access.

Download some free FTP client. Or addon for browser like FireFTP for firefox.
Connect using your FTP details
Find this file
/public_html/frontline/wp-content/themes/grisaille/functions.php
Download to your computer
Edit
Upload file back

Actually there is no way…
Do you have any access to database?

Thanks,
I used this solution too.
But still can’t get why it happend at all.

Hi,
A small edit to previous poster.
To avoid including submenu inside h1 tag, change:

$output .= $indent . '<h1' . $id . $value . $class_names .'>';
to
$output .= $indent . '<div' . $id . $value . $class_names .'>';

;

$item_output .= '<a'. $attributes .'>';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '</a>';

to

$item_output .= '<h1><a'. $attributes .'>';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '</a></h1>';

and

function end_el(&$output, $item, $depth) {
	$output .= "</h1>\n";
}

to

function end_el(&$output, $item, $depth) {
	$output .= "</div>\n";
}

p.s. Why have you chosen so difficult way to get penalty in google?