No reports and visitors in realtime after update 1.4 to 1,71

Since my update 1.4 to 1,71 no “visitor in realtime” and “reports” are shown.
I have gone back to 1.4, because an earlier update failed, because of the
PHP Version in the past.

After updating to a new server and PHP version, I have tried updating again
and it seems 1.5-b1.php was not executed. I get a lot of error messages and
added the database updates manually. Seems I forgot a step.

Can you please help me.

Attached a screen shot of the widget “visitor in realtime”,
instead of country, IP and keyword, there is ony a character ‘e’ or ‘S’ it linked
to www.website.com/piwik/e or www.website.com/piwik/S.

Best regards and thank you very much in advance for your help.

update to latest 1.7.2 and this bug is fixed. make sure you delete your browser cache and all files in piwik/tmp/*