I too am having this issue.
My Visitors Overview widget is showing up, but when navigating to any of the “tabs” on top, such as Vistors, Referrers, nothing will come up and I get a “Oops… problem during the request, please try again.”
When tracking down the failed request, I can find the bad post request in my browsers logs. Here’s an example:
my.piwik.domain.com/index.php?date=previous30&module=Actions&action=indexPageUrls&idSite=14&period=range
Nothing is returned from the server. No error log is generated, the request dies silently and I have not a clue why.
I also tried setting my default data range to “Previous 30 days”, but that didn’t change anything, still getting blank tabs/reports.
The funny thing is, on my dev server where I tested the upgrade before actually performing it, it works as expected. In fact it’s still working normally. My dev environment is in the same timezone as I am(US Eastern), but my live environment is in central time.
My Dev is running PHP 5.3.3, and my live is running 5.3.23.
My piwik status page reports everything is set up correctly. I have tried clearing out and setting some loose permissions on my piwik/tmp folder, and that has not fixed the problem.
I allowed piwik to update the code, then ran the database update via the command line. When I noticed this problem yesterday, I tried downloading and applying the code manually, to be sure a file transfer error was not the cause. This also produced the same results.
I can provide more information about my setup if requested.
Thank you so much for your time.