My mother had an issue where she updated, then couldn't launch any apps. Told her the apps were not installed when trying to run them.
A simple email to pandigital and they told her she had to apply the update twice. Which is weird, but after she had done so it worked. Only problem now is she can't figure out how to get her books back, just keeps giving her samples of books she bought. But hey, I'm proud she got as far as she did.
This was on the white Novel e-reader.