Lupin, isn't your board 1.x?
Huf, is there a field "anonymous_board" in your database? Try to manually run the install.php script and see what's happening, I'm curious as to whether or not the script is running. I haven't been able to recreate the issue so I can't test it myself. It should be a column under {dbprefix}boards.
Alright, I checked the database and there is a column "anonymous_board" in the "smf_boards" table. The column's value for all other areas is 0 and for the anonymous area it's 1. This was the case when I posted my previous message as well, I just forgot to mention it.

I backtracked the mod's installation on the Theme and Source files to see if for some reason something would have been omitted, but all the changes were there. The only thing that was different that in the install.xml was in the Post.template.php file where installation xml says this:
<file name="$themedir/Post.template.php">
<operation>
<search position="after"><![CDATA[
// Finally, the submit buttons.
]]></search>
<add><![CDATA[
// anonymous board mod
if ( $context['anonymous_board'] )
echo ' '. $txt['Post_anonymous'] .' <input type="checkbox" name="post_unanon" />';
]]></add>
</operation>
</file>
which should place the anonymous board mod changes after the "//Finally..." line but in my board's Post.template.php the anonymous board modification is before the "//Finally..." line.

Not that it makes any difference in the end, since the "//Finally..." line is just a comment, but I still found that a bit weird.

I just checked the error log again and the last errors of the matter have been from December 18th. I tried making a new topic in the anonymous area and now the "Post with your username" checkbox appeared and I could start a topic anonymously.
I haven't touched anything, haven't made any changes or anything and now it works. I'm the only admin that touches any files or packages as well so no-one else has done any modifications either. I'm stumped. Some mysterious things are happening.

I'll be doing some testing on my forum still, but at the moment the problem seems to have been fixed. I wonder if it was some kind of a caching problem or something, my forum has had some other problems with it as well and that's the only thing I've tampered with these past couple of days.

In any case, I'll be reporting back if the error appears again or if I can determine what it actually was that was causing it but at the moment it seems to be working for all different usergroups without a problem so all is well.
Happy Holidays and thanks for the great mod!
