Update: After searching through the troubleshooting discussions, I tried several more suggestions, all to no avail. Here’s a complete list of everything I’ve tried so far:
Rebooted MySQL
Reset the template to default
Disabled all plugins
Disabled the server firewall
Downloaded a fresh version of 3.0.4, deleted all the old wp-include and wp-admin files, and then uploaded the fresh version.
I’ve spent some time looking through the raw server logs, searching on “export.php,” but all the server codes shown are 200 and 304. Neither indicates what I’m seeing in the page source (no closing tags, no pulldown help, no export button, nothing below the “Categories” list.
Is it possible I have too many categories and that’s what’s causing the page to freak out? Clearly I’m running out of ideas.
How many categories do you have on your site? Is it possible that one of them has a special character in it that could be causing the issue?
189 categories, some of which have “&” or “’” in the name. None of the slugs have any special symbols, and the Export page lists the categories by ID number, not slug.
Are you using the Export feature under the Tools section in the Dashboard?
I just created over 200 categories, added them all to a post and they all display on the Export page. But the name of each category is also displayed in the dropdown list and not the ID of the category.
I’m also using 3.0.4.
JarretC – I’m trying to use the Export page under Tools, yes.
I wasn’t clear enough on the contents of the dropdown list vs. the category IDs. The dropdown list is fine, the IDs refer to the list identifiers in the code I see when I do a “View Source” in Firefox for the export.php page.
Here’s what the bottom of the page looks like:
<th><label for="taxonomy-category">Categories</label></th><td><select name='export_taxonomy[category]' id='taxonomy-category' class='' >
...
<option class="level-0" value="19505">Personal Narrative</option>
<option class="level-0" value="19512">Political Cartoons</option>
</select>
</td></tr>
This is the bottom of the ../wp-admin/export.php page viewed via “View Source.” It’s missing table entries for content types and statuses and it’s missing the “Download Export File” button. It’s like the page never finishes being generated for some reason, but I can’t figure out why.
I’ve done a bit more digging on this, and looking at the actual export.php code, it appears that the error could be related to this taxonomy bug: http://core.trac.wordpress.org/ticket/14306 However, I’m still researching. There’s a patch at the bug-tracker link – if my problem is related to this but, sould the patch work on my site?
In the process, I’ve also gone into wp-admin/export.php, wp-admin/includes/export.php, and wp-admin/includes/taxonomy.php looking to see if there were spare lines or spaces after “?>” at the end of the files, and I found that in most cases there were. This appears to be the case for wp-admin/admin.php and most of the other files I’ve looked at. Given how widespread this is (with a fresh download of 3.0.5 from just minutes ago), I’m not convinced that this is the problem – if it were, I’d expect LOTS of people to be having multiple issues, not just me.