After upgrading 8.1 to 8.2 some of the admin apps don't load. They just display a blank page
Some do load (eg pages, forms, sites) but some do not (eg Blogs, Checked-out items, Web Farm)
The dashboard also displays nothing
As you've found out, clear all your cache from the browser, doesn't matter what browser, but always clear it after an upgrade. Mainly because the Admin UI interface caches JS and CSS pretty heavily in there.
I was doing this in chrome.
I've just loaded up the site in IE and it seems ok
I cleared all browsing history data in chome and it came to life.
I had the same issue and cleared both my browser and the site cache and it mostly started working except the dashboard is still blank.
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