0.99.6839 version on android (tablet) crashes when loading file. Previous version loaded the particular files ok (But reported some plug in's missing)

The play store reports 'the program may not be optimised for this device'

I only use this android version as a scratch pad as it hasn't got plug ins but I note that the Windows version has been updated too. I hope that doesn't have a similar issue as I now use Smath a lot.

I'm happy to provide any further info if required

Just saved a file created in New version. That opens ok but can't open any previous files?