How to limit author to a specific category?

Back Again, I have an issue with validation of the RSS feeds. They were working yesterday, but not today? I’m using the validator and it says the following?
This feed does not validate.

line 28, column 2: Undefined item element: wfw:commentRSS [help]

Here is line 28
<wfw:commentRSS>https://faa.appstate.edu/wordpress/?feed=rss2&p=15</wfw:commentRSS&gt;

Any ideas? TIA Doug

Although I get an error when validating the RSS at feedvalidator – it seems to work fine in feedreader – the feeds are updating there fine. Anyone else getting error line 28 with RSS validation – I searched the forums but have not found this yet. Maybe I should be posting this under RSS discussion?

Redalt is down again. Are their plugins mirrored anywhere?

Redalt is still down. Can anyone supply the Role Manager and Limit Categories Plugins? If you would be so kind as to send to hayeswg04 at ameliaislandfl.org I would be eternally grateful.

I installed both plugins. I am getting the following error:

WordPress database error: [You have an error in your SQL syntax near ‘)’ at line 3]
INSERT INTO wp_post2cat (post_id, category_id) VALUES (26, )

I think that the problem my be with Limit Categories.

Here is how my Role is setup:

https://luisgarza.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=1886&g2_serialNumber=2

Here is how my Limit Categories setup:

https://luisgarza.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=1889&g2_serialNumber=1

What is it that I am doing wrong?

I am using PHP4. Is that the problem? It appears that it is not picking up the category even though that it is clicked.

Please Help

Is there an alternative like this for WP2?