[Plugin: Jetpack by WordPress.com] blank page after update

I am having similar problems.

I don’t get the stats image on my site and I can’t click it. So I browse to the stats page using the direct link:
https://www.mysite.tld/wp-admin/admin.php?page=stats

The page is blank except for on line of text:

You do not have sufficient permissions to access this page.

Yes, I just upgraded the JetPack.

me too. the update is borked!!!!

Jetpack 1.2.1 is a bug fix release that should alleviate these issues. Please try upgrading or installing this version and see if it helps.