The zip file appears to be missing. Can it be reposted? Has the solution to the problem changed?
In order to disable specifics widgets to specific roles, you can follow this instructions:
1) Go to Administration->Settings and click the Advanced settings link.
2) Locate the Toolboxes section in the list and navigate to ContentToolboxSection. You will see all the different sections corresponding to the widget toolbox inside of ContentToolboxSection->Tools as shown in the following image
3) For each section you want to disable, define a parameter with key "DisallowedRoles" . The value field will have the list of Roles you want to disable (separated by comma), as shown in the following picture.
4) Put the files Global.asax and Global.asax.cs (zipped and attached to this message) in the root of your Sitefinity website.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items