WordPress MU

So, I'm running WPMU with subdirectories instead of subdomains, most recent version. I was getting blank pages on post or post edit submission, until I just turned error reporting on. I'm getting lots of:

Notice: Undefined index: nomemcache in (path here)/wp-includes/functions.php on line 169

Everything but this seems to be working okay, and posts do resolve correctly, it just doesn't bring up a successful post page. Any ideas why this might be?

Notices won't cause your problem. Consider a notice like you would a nit-pick. Like a tiny spot that's barely noticeable on a fresh wax job on your truck (or car).

Undefined indexes are a pain to remedy sometimes, and to be honest in some cases can really bloat the code when combined over a lot of files. But, that's a technical topic, so no need to bore you.

Can you check your error logs, and see if there is something new right after posting?

It would also help to know the platform you're using as well. Server OS, Web Server version/flavor, Php version, browser you're using, etc.

Might not point to anything directly, but at least it's a starting point.

I can't remember, but I think I read another post about a similar issue not too long ago as well.

I'm on a Linux server running Apache 1.3.37, with PHP 4.4.4 and MYSQL 4.1.21-standard. On my end I'm running Firefox 2.0 on OSX 10.4.8.

As for the error log, quite a bit:

[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Only variable references should be returned by reference in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 108
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined offset: 0 in /home/fluffy/public_html/crimethinc/wp-includes/plugin.php on line 106
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 1 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: blog-lookup in /home/fluffy/public_html/crimethinc/wp-includes/cache.php on line 292
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 1 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 33 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 23 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: 7 in /home/fluffy/public_html/crimethinc/wp-content/plugins/page-links-to.php on line 96
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 33 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 17 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Only variables should be assigned by reference in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 95
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined variable: new_array in /home/fluffy/public_html/crimethinc/wp-includes/wp-db.php on line 313
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined variable: post_mime_type in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 655
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined variable: post_content_filtered in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 655
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined offset: 0 in /home/fluffy/public_html/crimethinc/wp-includes/wp-db.php on line 271
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined variable: post_ID in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 595
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 2 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 2 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 1 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined variable: post_category in /home/fluffy/public_html/crimethinc/wp-includes/post.php on line 506
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 1 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 1 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: advanced in /home/fluffy/public_html/crimethinc/wp-admin/admin-functions.php on line 58
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: saveasprivate in /home/fluffy/public_html/crimethinc/wp-admin/admin-functions.php on line 54
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: saveasdraft in /home/fluffy/public_html/crimethinc/wp-admin/admin-functions.php on line 52
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: parent_id in /home/fluffy/public_html/crimethinc/wp-admin/admin-functions.php on line 26
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 32 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 33 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: page in /home/fluffy/public_html/crimethinc/wp-content/mu-plugins/widgets.php on line 202
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: plugins in /home/fluffy/public_html/crimethinc/wp-admin/menu.php on line 23
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 5 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 6 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 5 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 2 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: unserialize() [function.unserialize]: Error at offset 0 of 4 bytes in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 219
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169
[Tue Dec 19 18:40:13 2006] [error] PHP Notice: Undefined index: nomemcache in /home/fluffy/public_html/crimethinc/wp-includes/functions.php on line 169