Output folder: E:\Program Files\World of Warcraft\WUU
Running WUU.exe to check digital signature of downloaded file
Digital signature verified!
Running WUU.exe to extract downloaded file
WUU-1.4.305.zip extracted to temporary directory
Copying extracted files to E:\Program Files\World of Warcraft\WUU
Delete file: C:\DOCUME~1\MYUSERNAME\LOCALS~1\Temp\Wurm\WUU\UpdateWUU.exe
Copy to E:\Program Files\World of Warcraft\WUU\
Try again, but make sure WUU.exe is not running when you try.
Forbidden files are files that potentially could be dangerous.
Those files you point at, are for making the addon partially "Load on Demand".
You don't need neither those files, nor make them LoD for them to work.
WUU should be able to handle this type of LoD-addons if you want to, although some, like SpamSentry, doesn't seem to work that way.
(Hope I didn't mess up to much now) ;)
2007-05-12 21:27:22: (INFO) Updating !StopTheSpam from -2 to 26541.1002
2007-05-12 21:27:24: (WARN) Download failed: Error downloading file: HTTP Error 404: Not Found
2007-05-12 21:27:24: (ERROR) Couldn't download new version of !StopTheSpam