Hi Aderson,
Thank you for the quick answer, as always.
I already tried the first technique and I manage to have errors logged on the event viewer when turning on the advanced mode.
I can then easily retrieve those error by turning back to the human friendly mode.
Here is what I got...do you think any further step would be more helpful (fiddler, symbol files ??)
Url Processing Exception:Exception in Url Rewriting Process
Http Status:500 Internal Server Error
Original Path:http://www.pcs.fr/Admin/Site-Settings
Raw Url:/Admin/Site-Settings
Final Url:null
Rewrite Result:[no rewrite]
Redirect Location:[no redirect]
Action:Continue
Reason:Exception
Portal Id:0
Tab Id:-1
Http Alias:www.pcs.fr
Debug Message 1:Exception: Object reference not set to an instance of an object.
Debug Message 2:(TRUNCATED TO 500 CHARS): Stack Trace: at DotNetNuke.Security.PortalSecurity.IsInRoles(UserInfo objUserInfo, PortalSettings settings, String roles) at DotNetNuke.Security.Permissions.PermissionProvider.HasPagePermission(TabInfo tab, String permissionKey) at DotNetNuke.Common.Globals.ValidateModuleInTab(Int32 tabId, String moduleName) at DotNetNuke.Entities.Urls.TabIndexController.AddStandardPagesToDict(SharedDictionary`2 tabIndex, Dictionary`2 dupCheck, String httpAlias, Int32 portalId, String cultureCode)
Debug Message 3:Inner Ex : null
Exception Type:System.NullReferenceException
Message:
Object reference not set to an instance of an object.
Stack Trace:(TRUNCATED TO 500 CHARS): at DotNetNuke.Security.PortalSecurity.IsInRoles(UserInfo objUserInfo, PortalSettings settings, String roles) at DotNetNuke.Security.Permissions.PermissionProvider.HasPagePermission(TabInfo tab, String permissionKey) at DotNetNuke.Common.Globals.ValidateModuleInTab(Int32 tabId, String moduleName) at DotNetNuke.Entities.Urls.TabIndexController.AddStandardPagesToDict(SharedDictionary`2 tabIndex, Dictionary`2 dupCheck, String httpAlias, Int32 portalId, String cultureCode) at DotNe