Table 'xxxxx_xxxx_event' doesn't exist

Hi, after upgrading my opencart 1.5.5.1 to 2, I got tons of errors in the "error list" box in "error log" panel and get the below errors even when I click the "clear" button.

2015-07-20 16:08:28 - PHP Notice: Error: Table 'dvcam_mydatabasename.oc_event' doesn't exist<br />Error No: 1146<br />SELECT * FROM oc_event in /home/dvcam/public_html/mywebsite.co.uk/system/library/db/mysqli.php on line 41
2015-07-20 16:08:28 - PHP Notice: Trying to get property of non-object in /home/dvcam/public_html/mywebsite.co.uk/admin/index.php on line 154
2015-07-20 16:08:28 - PHP Warning: Invalid argument supplied for foreach() in /home/dvcam/public_html/mywebsite.co.uk/admin/index.php on line 154

Any help would be appreciated

The database was not upgraded or fully upgraded, make sure to follow the upgrade instructions of the method you are using.