multiple errors with init.php and functions.php

[uprentiss]

last night, i upgraded the vb ad management system from 4.02 to 5.02

shortly after, i was getting this message when i tried to access my site

Fatal error: Call to a member function on a non-object in /homepages/42/d253160043/htdocs/forums/includes/functions.php(5721) : eval()'d code on line 15

this morning i was getting 2 different errors which i did not save, but something was strange as the ftp password appeared to have been changed and i was missing multiple files from my includes folder

i replaced the includes folder and edited the config.php file appropriately, and now i am getting these errors

Warning: Unknown([path]/kbank/init.php): failed to open stream: No such file or directory in [path]/includes/init.php(298) : eval()'d code on line 96

Warning: (null)() [function.include]: Failed opening '[path]/kbank/init.php' for inclusion (include_path='.:/usr/lib/php') in [path]/includes/init.php(298) : eval()'d code on line 96

Warning: Unknown([path]/kbank/hook_fetch_userinfo_query.php): failed to open stream: No such file or directory in [path]/includes/functions.php(1365) : eval()'d code on line 8

Warning: (null)() [function.include]: Failed opening '[path]/kbank/hook_fetch_userinfo_query.php' for inclusion (include_path='.:/usr/lib/php') in [path]/includes/functions.php(1365) : eval()'d code on line 8

Warning: Unknown([path]/kbank/hook_fetch_musername.php): failed to open stream: No such file or directory in [path]/includes/functions.php(1139) : eval()'d code on line 2

Warning: (null)() [function.include]: Failed opening '[path]/kbank/hook_fetch_musername.php' for inclusion (include_path='.:/usr/lib/php') in [path]/includes/functions.php(1139) : eval()'d code on line 2

Warning: Unknown([path]/kbank/hook_fetch_userinfo.php): failed to open stream: No such file or directory in [path]/includes/functions.php(1443) : eval()'d code on line 2

Warning: (null)() [function.include]: Failed opening '[path]/kbank/hook_fetch_userinfo.php' for inclusion (include_path='.:/usr/lib/php') in [path]/includes/functions.php(1443) : eval()'d code on line 2

Unable to add cookies, header already sent.
File: /homepages/42/d253160043/htdocs/forums/includes/class_core.php
Line: 3254

any help would be appreciated