Incompatibility with mail Poet

Hi all

I have a “White Screen of Death” syndrome (site is a blank screen) when trying to use the MailPoet plugin.
Syndrome appears even with all others plugins deactivated, so it’s really an incompatibility between the plugin and the theme.
Syndrome disappears whan changing theme, so it has to be a theme issue.

Any known fix ? I’d be sad to give up Magazine Basic… But since all my ssites are using Mailpoet (without difficulty..) I’ll have to consider this solution..

Thanks