[Mediawiki-l] Problem upgrading from 1.5.6 to 1.7.1

[Paul Sanderson]

I am sorry to post this again but this is becoming urgent.

I have just upgraded from 1.5.6 to 1.7.1

most things seem to work OK but I see the following two errors

1. for each special page I get the following displayed at the top of the page

Undefined index: REQUEST_URI in
D:\home\xxxxx\forensicwiki.com\htdocs\includes\WebRequest.php on line
302


2. If I attempt to remind myself of my password or send a new password
to a user as well as the above message I get

Login error:Error sending mail: mail() [function.mail]: SMTP server
response: 501 Protocol requies only one recipient at a time

Obviously these errors were not present in 1.5.6


the version page for media wiki displays

MediaWiki: 1.7.1
PHP: 5.0.2 (cgi-fcgi)
MySQL: 5.0.18-nt

Any ideas on how to sort this out very much appreciated
Paul