A number of issues have been reported with people using this plugin and have even caused some to disable it until it is fixed. We've been awaiting an update or news of an update for a while now.

Here are some of the issues that have been reported: Double meta's, Blank white pages, 404 error issues among several other issues.

Also this plugin conflicts with all versions of the who's online plugin or online24, online today plugins coded by different plugin authors. This issue causes guests to recieve a blank white page on the index when they aren't logged in.

Disabling the SEO plugin or disabling the online24 plugin solves this issue, but both can not be activated at the same time or guests get a blank white page on the forum index.

It's not assumed that everyone would like to use the online24 plugin, nor was it deemed necessary to make it compatible with all of these. I think I will choose to make it compatible with one of the "online" plugins you mentioned.

For the rest of the issues, there aren't of much concern. Double meta tags isn't much of a trouble, and blank white page (as you mentioned) is caused by few other plugins that are incompatible. 404 errors are caused due to lack of mod_rewrite.

Thanks for bringing up the issues but I will be able to fix them only when I have to spare and given the issues weren't of much concern, I didn't pay much attention. I don't think I will be fixing them for the next 7-10 days, however.

My main concern was the Online today/last 24 hours plugin which I want to use but something with the SEO plugin is causing a conflict.

Why does that issue occur when both the online today and SEO plugin is activated that guests get a blank white page on index?

As for what I meant about the 404 errors, one of my threads on the forum has a minor issue which I believe is related to the SEO plugin where if I try to log in using the quick login or logout while viewing the thread in question I get a 404 page, however doing the same thing while viewing other threads works fine.

If you need me to I can post a link to the problem thread and provide a test account just to see if you might know what the problem is.

^ Yes please. That should be helpful.

I was waiting a bit for a reply that I forgot about this thread, I'll see if I can find that thread again.

I am unsure if it's related to the SEO plugin though, but since this doesn't occur with other threads I am guessing it is an SEO issue related to an unrecognized/special character or some other bug.

Now I am unable to find the thread I was referring to in my last post. I will let you know if I come across it again.