this is not an issue of the announcements module.

You can set folder permissions to everyone  for all folders in your filesystem through an sql script though:

declare @PermissionID int
select @PermissionID = PermissionID from {objectQualifier}Permission where PermissionCode = 'SYSTEM_FOLDER' and PermissionKey='READ'

declare @FolderID int
DECLARE FoldersCursor CURSOR FOR
  Select FolderID from {objectQualifier}Folders

OPEN FoldersCursor

FETCH NEXT FROM FoldersCursor
  into @FolderID

WHILE @@FETCH_STATUS = 0
BEGIN

   if not exists (select * from {objectQualifier}FolderPermission where (PermissionID = @PermissionID) and (FolderID = @FolderID) and (RoleID=-1))
   begin
   insert into {objectQualifier}FolderPermission (FolderID, PermissionID, RoleID, AllowAccess) values (@FolderID, @PermissionID, -1, 1)
   end
   FETCH NEXT FROM FoldersCursor
     into @FolderID
END

CLOSE FoldersCursor
DEALLOCATE FoldersCursor

Run this script from host > sql, and all your folders, in all your portals will have read permissions for all users set.

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David, the 4.0 version of the module needs dnn 4.6.x or newer, it will not work in older versions of DNN

Anyhow, this is not a module issue, but a core issue, as explained above. Turning off tracking linked the file directly i think in older dnn versions, which would bypass dnn file security. Hence the error does not happen anymore...

After running sql scripts you really should also restart the application, as info might be cached by DNN

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