This is porbbably caused due to memory issue. Is it possible for you to try the following?
- Export the retina vertical to the production tool
- Create a MIB from the production tool including the vertical with the popups
- Run the MIB you just created through the MIB optimiser (http://support.magplus.com/entries/21868426), this will convert PNG images that doesn't have an alpha channel to JPEG, this will at the same time downsize the vertical.
- Test the MIB on your device using the MIB pusher: http://support.magplus.com/entries/21865817
If this solves your problem, when you have your finished version of your retina MIB, run it through the optimiser the decrease the size.
Let me know how it works out!