TBH I was not aware what "anonymantis" is. (never used it)
I thought it was just the name of your bugtracker and was wondering about the path of nusoap.php
This was changed from 1.1.x to 1.2.x, so I thought you had copied 1.2 on top of 1.1 (which is the wrong way to upgrade)
Now having found the real "anonymantis" it seems there is a conflict because there are two differnt versions of the file
<yourMantis1.2.0>/library/nusoap/nusoap.php
<yourAnonymantis>/nusoap/nusoap.php
Please use Search before posting and read the Manual
ok. I'm thinking of bypassing mantis altogether and putting up a quick and dirty form, which inserts directly into the db... that sounds like less work than digging through this code base now...