Hi,
Am posting here on the off-chance that someone else might encounter the same problem / solution.
Fairly large game that runs fine on Flash, published to Android and worked fine there (direct copy to download directory on Android). Later I realised that the name had a typo so went back in under Settings->mobile and changed the typo (1 to a 3) in both the App Name and App ID. Thereafter I kept on getting 'running low on free memory .....'
SOLUTION:
delete the game in stencylworks->games-generated and re-publish. No problems any more.
Hope this helps someone, sometime, somewhere

Oliver