Support » Fixing WordPress » Warning: sem_get() [function.sem-get]: failed for key 0x152b

  • Hi,

    I’ve had my WordPress site up and running successfully for about three months, the URL is It was fine last night but suddenly this morning the formatting is all messed up and I can not get into the Admin dashboard. The error message says:

    Warning: sem_get() [function.sem-get]: failed for key 0x152b: Permission denied in /home1/comicsni/public_html/wp-content/plugins/wp-cache/wp-cache-phase2.php on line 98

    Warning: Cannot modify header information – headers already sent by (output started at /home1/comicsni/public_html/wp-content/plugins/wp-cache/wp-cache-phase2.php:98) in /home1/comicsni/public_html/wp-includes/pluggable.php on line 868

    Any idea what is going on and how I can get back into my Admin page? Thanks.

Viewing 6 replies - 1 through 6 (of 6 total)
  • I’ve just hit this same problem

    I was able to fix the error by disabling the wp-cache plugin. Haven’t tried to reenable it or anything to get it working again though.

    Nile Flores


    Yoast Support

    You know, I had a similar issue, but not with a plugin, but with customizing a Thesis theme.

    Check your wp-config.php file against a fresh default file (same file… wp-config-sample.php)

    I was missing the ?> at the end of the file.

    I am not sure why this occurred, but it did and when I read this, I thought I would toss that in there as it just happened to me yesterday.

    I just had the same problem and followed kddubb’s advice by removing WP-Cache which I had installed about 10 minutes before which worked.

    Thanks so much was about to panic then!

    Any ideas whay this happens with WP -Cache though? & maybe an alternative plugin?


    Haven’t tried it myself but thought this might help as a solution.

    Thank you, hugosaner! Yours was the right solution!!!

Viewing 6 replies - 1 through 6 (of 6 total)
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