There is a missing implementation for Membership, Role and Profile providers that wraps the standard ASP.NET Providers in the BETA. We managed to make just a skeleton of these providers and we will complete them for the release candidate. Currently we do not support custom providers - there are issues with them. We are working on a articles about custom membership and role providers.
In the BETA it is not possible to handle 403 status code of the error. By default the ASP.NET SiteMapProvider also does not return information whether the page is not accessible or it is not presented in the current sitemap. Since we follow the default implementation of ASP.NET SiteMapProvider we are also affected from this issue and we are working on a solution about it.The fix is very easy and we will have this functionality in the release candidate.
Some changes to the application quire restart, because they depends on initialization of some providers. For instance if you have a custom module - first, you have to build the class library/project each time you make any change in the code. Second the module will be added after application restart, because after application restart the backend main menu is initialized and populated and all modules are created.
Let me know if there are any further questions.
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