I may sound funny but not to me. I am running a site using the Newsletter plugin but the PHP version used is very low (5.2.6-1+lenny16). My dashboard was not showing which is not a major problem but with last upgrade of your plugin (to v. 5.1.8) my newsletter “Edit” – Message tab screen disappeared. The other tabs (Message textual; Targeting etc.) show fine but the main version is missing.
Same is with the last screen when you press “Proceed to Edit” button.
I believe that if I manage to install previous version this could help me resolve the issue. I have asked server admins to upgrade but that is not very likely to happen or at least in the near future. Therefore downgrading plugin version seems to be the only way I deal with the problem.
Please could you send me an older version so that I deal with that.