I am seeing the following errors in IE Fiddler when I load any page (regardless of whether it has the Worklist webpart):
1. GET /_layouts/K2/Tasklist/JS/ie55up.js
Error msg: HTTP/1.1 404 Not Found
Content-Length: 103
Content-Type: text/html
Server: Microsoft-IIS/6.0
MicrosoftSharePointTeamServices: 12.0.0.6219
X-Powered-By: ASP.NET
Date: Thu, 26 Mar 2009 20:43:31 GMT
<html><head><title>Error</title></head><body>The system cannot find the file specified.
</body></html>
2. GET /_layouts/K2/Tasklist/JS/core.js
HTTP/1.1 404 Not Found
Content-Length: 103
Content-Type: text/html
Server: Microsoft-IIS/6.0
MicrosoftSharePointTeamServices: 12.0.0.6219
X-Powered-By: ASP.NET
Date: Thu, 26 Mar 2009 20:43:31 GMT
<html><head><title>Error</title></head><body>The system cannot find the file specified.
</body></html>
3. GET /_layouts/K2/Tasklist/_layouts/K2/Tasklist/images/menu_devider.gif
HTTP/1.1 404 Not Found
Content-Length: 103
Content-Type: text/html
Server: Microsoft-IIS/6.0
MicrosoftSharePointTeamServices: 12.0.0.6219
X-Powered-By: ASP.NET
Date: Thu, 26 Mar 2009 20:43:31 GMT
<html><head><title>Error</title></head><body>The system cannot find the path specified.
</body></html>