Warning: session_start()

I just had something similar happen when my hosting had to move me from one server to another. My issue was caused by permissions not set correctly on that /tmp directory on my new server.

Maybe this’ll help someone (I find answers in the forums all the time, but never really get to give back).

I hope it helps!

Hi,

I am facing the same problem. However, the problem is present on some installations but not others on the same server. I had a look at my /tmp directory permissions – but couldn’t see any differences. I did notice that the plugin now uses two temp directories instead of the earlier 1 (in previous versions before the last couple of updates).

Could you be a little more specific about what you did to fix the permissions?

Thanks

Hello,

did you have test Version 3.0.7?

There i have set the BackWPup temp dir for sessions temp dir if the default issend writeable.

Hello,

Yes, I have version 3.0.7.

As a follow up, on further investigation I found that once I activated the plugin, and visited the Settings -> Information section, the plugin resumed working without a problem and the warning messages disappeared. I was checking if Safe mode was on – as one of the support threads suggested as much – but found that was not the case.

Not sure why this resolved the problem – but I could replicate it on a couple of sites. Hope this helps you investigate and resolve it.

Thanks

Hello again,

Just my followup info… I don’t believe my issue was specific to this plugin, but is what brought the issue to the surface — unless using that /tmp is a flaw.

As you see it the original poster’s Warning msgs above, /tmp is at the same level as his /public_html, I had a similar situation. We don’t have access ourselves above our ‘root’ (the /html dir) so I could not check permissions myself, I was at the mercy of the hosting service.

After 45mins on the phone with the first level support, I was finally able to get them to bump up a level in the service chain and they discovered that permissions were not set properly.

Hope it helps.

hello i have the similar problem

Warning: session_start() [function.session-start]: open(C:\Windows\Temp\\sess_fgstfchr102geqkcmp0jgn2da5, O_RDWR) failed: Invalid argument (22) in D:\Hosting\12111878\html\nihil\wp-includes\plugin.php on line 429

line code

// Sort
if ( !isset( $merged_filters[ $tag ] ) ) {
ksort($wp_filter[$tag]);
$merged_filters[ $tag ] = true;
}

reset( $wp_filter[ $tag ] );

do {
foreach ( (array) current($wp_filter[$tag]) as $the_ )
if ( !is_null($the_[‘function’]) )
call_user_func_array($the_[‘function’], array_slice($args, 0, (int) $the_[‘accepted_args’]));

} while ( next($wp_filter[$tag]) !== false );

array_pop($wp_current_filter);
}