Widget Logic lets you control on which pages widgets appear using WP's conditional tags. It also adds a 'widget_content' filter.
Try switching to the WP default theme - if the problem goes away, there is something specific to your theme that may be interfering with the WP conditional tags.
The most common sources of problems are:
In version 0.50 I made some fundamental changes to how Widget Logic works. The result was that the wp_reset_query was less targeted in the code. If lots of people find this problematic I will look at a general solution, but the main workround is to put wp_reset_query() into your code just before calling a dynamic sidebar.
Since v .50 the widget logic code runs such that when dynamic_sidebar is called in a theme's code it will 'return false' if no widgets are present. In such cases many themes are coded to put in some default sidebar text in place of widgets, which is what you are seeing.
Your options, if you want this default sidebar content gone, are to either edit the theme, or as a work around, add an empty text widget (no title, no content) to the end of the sidebar's widget list.
There is some confusion between the Main Page and the front page. If you want a widget on your 'front page' whether that is a static page or a set of posts, use is_front_page(). If it is a page using is_page(x) does not work. If your 'front page' is a page and not a series of posts, you can still use is_home() to get widgets on that main posts page (as defined in Admin > Settings > Reading).
If your theme calls the sidebar after the loop you should find that the wp_reset_query option fixes things. This problem is explained on the is_page codex page.
Take care with your conditional tags. There is both an
is_category tag. One is used to tell if the 'current' post is IN a category, and the other is used to tell if the page showing IS for that category (same goes for tags etc). What you want is the case when:
(this page IS category X) OR (this is a single post AND this post is IN category X)
which in proper PHP is:
is_category(X) || (is_single() && in_category(X))
Have a go at it yourself first. Check out the 'Writing Logic Code' section under Other Notes.
This is sort of deliberate. I originally wrote it to be as flexible as possible with the thought of writing a drag'n'drop UI at some point. I never got round to it, because (I'm lazy and) I couldn't make it both look nice and let you fall back to 'pure code' (for the possibilities harder to cater for in a UI).
The plugin Widget Context presents a nice UI and has a neat 'URL matching' function too.
It might be that your theme performs custom queries before calling the sidebar. Try the
Alternatively you may have not defined your logic tightly enough. For example when the sidebar is being processed, in_category('cheese') will be true if the last post on an archive page is in the 'cheese' category.
Tighten up your definitions with PHPs 'logical AND' &&, for example:
is_single() && in_category('cheese')
Requires: 2.8 or higher
Compatible up to: 3.5.2
Last Updated: 2013-1-6
8 of 28 support threads in the last two months have been resolved.
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