I can access my image manager through the system admin menu. But when I want to acces the image manager in a new newstopic I get an pop-up with some warnings.

Warning: main(./mainfile.php): failed to open stream: No such file or directory in D:\Inetpub\wwwroot\imagemanager.php on line 28

Warning: main(): Failed opening './mainfile.php' for inclusion (include_path='.;c:\php4\pear') in D:\Inetpub\wwwroot\imagemanager.php on line 28

Warning: main(XOOPS_ROOT_PATH/class/template.php): failed to open stream: No such file or directory in D:\Inetpub\wwwroot\imagemanager.php on line 47

Fatal error: main(): Failed opening required 'XOOPS_ROOT_PATH/class/template.php' (include_path='.;c:\php4\pear') in D:\Inetpub\wwwroot\imagemanager.php on line 47

What can I do?

and my problem is... a blank page come when i used to open my image manager popup. There is nothin in there! why n how to fix this problem?

Really nobody out there who can give me the clue?