Web Dev Share Etc.

In a site, logged in with Admin, edit with Sharepoint Designer. Copy default master page to create a new one. Chech out new master page and edit some rows. Then, save and set as Default Master Page for site. Open browser, navigate to site and all it's ok! Fine! Now, I log with another user and.... ERROR ! "The Text property is read-only and cannot be set" In Sharepoint Log, you find somethings like below: System.Web.HttpException: The 'Text' property is read-only and cannot be set.    at System.Web.UI.ControlBuilder.AddProperty(String filter, String name, String value, Boolean mainDirectiveMode)     at System.Web.UI.ControlBuilder.PreprocessAttributes(ParsedAttributeCollection attribs)     at System.Web.UI.ControlBuilder.Init(TemplateParser parser, ControlBuilder parentBuilder, Type type, String tagName, String id, IDictionary attribs) .... Resolution! Go to Sharepoint Designer and check in your new master page!! Then, retry with other user...

.. Why Content Query Web Part...?? I did not found any reason to use Content Query Web Part.. Or maybe, I am no really skilled to find a way to use it with a real reduction of configuring costs. In the same time I build custom XLS for CCQWP, I can develop a Custom web part with Visual Studio... No, I think I develop custom wp in less time... Sure, with minor performance, but it works anywhere and it has simple governance, for me... And you? You found way to use "simple" CQPW? Maybe, only a demoralization time..