Before I begin I would like to thank the author of this plugin for making this available for free to everyone and I am very grateful for not having to code nearly as much as I would have without it. For everyone who was able to get this plugin working I suggest you donate for support. That being said...
So I just started using WordPress about a week ago and was searching for all the different plugins available to enhance it. Ajax was one of those things that I definitely wanted to include because it really makes a site look and feel so much cleaner. Anyway I came across this plugin.
It sounded exactly like what I was looking for: Ajax support for virtually every aspect of WordPress. So I installed the plugin (first onto WordPress 2.5). Nothing really worked like I expected. The only thing that actually worked was single page navigation, which has no customizations at all...and since it by default uses the post title as the link text for the navigation links... it really made my page look awful. I also noticed that that none of the "Overall Options" seemed to work either. For example when I chose a different throbber...nothing changed. Same with choosing the scrolling options. No matter what options I chose, they weren't reflected in the behavior of the plugin.
So I begin trying to narrow down what could be causing this. The first obvious thing it could be was the theme itself. So I tried using the default theme, which one would think the plugin was tested against... nothing.
So then I thought that I probably needed to update my wordpress to the latest version. So I did that (now running 2.8.2). Still nothing. The things that were broken were still broken and the single post navigation that worked... still worked the same way.
So instead of looking for other solutions...I decided to tinker inside the plugin to find out what all the trouble was.
I have verified that I am using the latest version (1.28 as of this post) and I also read probably everything this site has to offer as far as how to use this plugin (which is very limited...not because the author has no time but because a lot of the comments that could be helpful require approval...which if the author doesn't get around to approving never show up!).
Anyway I was checking the code and found that none of the toggle "Overall Options" were implemented. Most of these were simply hard-coded in (like the throbber). So I made some modifications and was able to get all of these working: choosing the throbber, choosing the scrolling options, and also under "Navigation" I fixed the toggle for trying to Ajax the search results.
I'm not sure if I have done something wrong for so much of this plugin not to work properly... I haven't really been able to find anything online that suggests anyone else is having as much trouble as I am (there isn't much to find!) but I figured that I would add to this forum by giving my experience. I hope that the author receives and respects my contribution.