Google Sitemap Error

Just checked my Google Sitemap and it seems to be giving a error on Google's Site ...

Errors Line:
9901
URL not allowed
This url is not allowed for a Sitemap at this location. [?] URL:
http://www.houseofcrazed.com/main.php?page=home


Now I looked up the Error Message:

Google has detected some URLs that appear to be at a higher level or different domain than the Sitemap file location. If you receive this error, try moving your Sitemap file to a higher location in your site and submitting again. For instance, if your Sitemap is listed under http://www.example.com/mysite/sitemap.xml, the following URLs are not valid for that sitemap

• Example Web Page - it's at a higher level than the Sitemap
• http://www.example.com/yoursite/ - it's in a directory parallel to the Sitemap

You should also check that the urls all begin with the same domain as your Sitemap location. For instance, if your sitemap is listed under http://www.example.com/sitemap.xml, the following URLs are not valid for that sitemap:

• Google - it's in the google.com domain rather than the example.com domain
• Example Web Page - it's missing the initial www
• Example Web Page - it's missing the protocol (http)
• https://www.example.com/ - it's using a different protocol (https rather than http)

Any URLs in the Sitemap that are not denied are processed normally.

Unfortunately I'm a bit confused what I'd have to change to fix this

Hello,

do you have vbseo_sm_vba.php addon enabled in vBSEO Sitemap Generator options? If so, you should disable since it links to a different domain and that is not allowed by google sitemap protocol.

Yah ... my VBA page is House of Crazed and forums is House of Crazed - Where Insanity isn't Tolerated, it's Encouraged!

Will it work if I add the page to the extra-urls file ?

You will have to create separate sitemap for every subdomain since it's not allowed by google sitemap protocol to have URLs from different domains in a single sitemap:

Note that this means that all URLs listed in the Sitemap must use the same protocol (http, in this example) and reside on the same host as the Sitemap. For instance, if the Sitemap is located at http://www.example.com/sitemap.xml, it can't include URLs from http://subdomain.example.com.

sitemaps.org - Protocol