http://docs.instantasp.com/InstantForum/integration_creatingusers.html

but I get this when I try to access the forum.:

---- Stack Trace ----
   System.Security.Util.StringExpressionSet.AddExpressions(str As String[], checkForDuplicates As Boolean, needFullPath As Boolean)
       (unknown file): N 00630
   System.Security.Permissions.FileIOPermission.AddPathList(access As FileIOPermissionAccess, pathListOrig As String[], checkForDuplicates As Boolean, needFullPath As Boolean, copyPathList As Boolean)
       (unknown file): N 00401
   System.Web.Caching.CacheDependency.Init(isPublic As Boolean, isSensitive As Boolean, filenamesArg As String[], cachekeysArg As String[], dependency As CacheDependency, utcStart As DateTime)
       (unknown file): N 01535
   System.Web.Caching.CacheDependency..ctor(filename As String, start As DateTime)
       (unknown file): N 00149
   System.Web.Caching.CacheDependency..ctor(filename As String)
       (unknown file): N 00056
   InstantASP.Common.XML.XMLDocument.OpenAsDataView(sSortColumn As String)
       (unknown file): N 00413
   InstantASP.Common.XML.XMLDocument.GetValue(sKey As String, sXMLPath As String, sSortColumn As String)
       (unknown file): N 00046
   InstantASP.InstantForum.Components.Request.IsPostPage()
       (unknown file): N 00033
   InstantASP.InstantForum.HttpContext.ForumContext.get_GetCurrentForum()
       (unknown file): N 00137
   InstantASP.InstantForum.HttpContext.ForumContext.get_GetCurrentSkin()
       (unknown file): N 00014
   InstantASP.InstantForum.HttpContext.ForumContext..ctor()
       (unknown file): N 00122
   InstantASP.InstantForum.HttpContext.ForumContext.get_Current()
       (unknown file): N 00110
   InstantASP.InstantForum.UI.Controls.MasterPage.OnInit(e As EventArgs)
       (unknown file): N 00011
   System.Web.UI.Control.InitRecursive(namingContainer As Control)
       (unknown file): N 00241
   System.Web.UI.Control.InitRecursive(namingContainer As Control)
       (unknown file): N 00179
   System.Web.UI.Page.ProcessRequestMain()
       (unknown file): N 00197

Anyone do have a clue on what I may be doing wrong, or have faced that issue before?

Thanks!