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"Category refresh error"

  1. I have 2 self hosted wordpress websites. One is working just fine, but another one is constantly trowing "Category refresh error" when I try to get the categories list populated. On my other website all works fine. I have already removed the categories on the wordpress website itself and added them again etc, but nothing seems to work.

    Any ideas?

  2. Is the troublesome blog running the latest version of WordPress?

  3. Yes. Recently upgraded to Wordpress 3.0.4.

    Both websites run on the same server. A few differences I can think of. Let me put the details here as they are both public sites anyway:

    Working site (categories are downloaded without any problems)
    http://tinokremer.nl

    Non working site (categories cannot be downloaded, it says "Category refresh error")
    http://www.almerefriends.net/saskia

    They both run the same wordpress version. The differences I can think of:
    - Domain is different, tinokremer.nl runs on a virtual host which only has one wordpress installation, while almerefriends.net hosts a few different websites like saskia/, maruska/
    - Addons are different
    - Configuration might be slightly different, on tinokremer.nl there are 3 categories, on almerefriends.net/saskia there are only 2

    It there a way for me to get more information? The error "Category refresh error" doesn't tell us much does it? It's running on my own server and I have full access to logs, all the files and everything. I'm a developer as well and familiar with php etc, if you have any ideas to get a bit more info, I'll be more then happy to try a few things. I can also make a user account for you on the troublesome website for you to have a look (We have to do personal email or something, I don't want to put credentials in this public forum ofcourse :) )

  4. A test account would be great - just shoot the details over to android@automattic.com

  5. I have setup an account for you and mailed the details. Let me know if I can do anything, I'm glad to assist wherever I can.

  6. Did you receive the mail mrroundhill?

  7. Yes, I believe I replied to your email address?

  8. I'm afraid no mails have been received by me about this. Not even in spam. :(

  9. Bummer. Does the blog with the issue have any mod_security or other .htaccess rules?

  10. It has a generic .htaccess file I'm using for all sites which prevents hotlinking of media files based on the referrer. It shows:

    -- begin snippit --
    RewriteEngine On
    RewriteCond %{HTTP_REFERER} !^$
    RewriteCond %{HTTP_REFERER} !^http://(www\.)?almerefriends.net(/)?.*$ [NC]
    RewriteRule .*\.(gif|jpg|jpeg|bmp|mpg|mpeg|wmv|asf|ppt|pps|m1v|swf)$ - [F]
    -- end snippit --

    Given your hint I have been investigating a bit on my own and I found something. We are both using User Access Manager (UAM) (http://www.gm-alex.de/projects/wordpress/plugins/user-access-manager/) to lock down specific articles. It's not required, but I have linked those to categories. This means some categories are visible to everyone, while others are only visible when logged in.

    That should not prevent the wordpress android app from functioning though as it should just filter categories. There is one category that is always visible.

    As both our blogs use it, it's also strange it works on one and not on the other.

    If you would like to get to the bottom of that I'm more then happy to help finding it. It has been sorted though by temporarily disabling this plugin and refreshing the categories in the app. Now the plugin is enabled again and still the app is working fine (it does not refresh them automatically when they are known does it?).

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