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XF 1.2 I upgraded today - thought it went well, but can't like posts now

I receive the following error when I try to like a post on any forum:
The following error occurred:

Argument 1 passed to EWRporta_DataWriter_Discussion_Thread::_discussionPostSave() must be an array, none given, called in /home/XXX/public_html/xenforo/library/XenForo/DataWriter/Discussion.php on line 453 and defined

1.XenForo_Application::handlePhpError() in EWRporta/DataWriter/Discussion/Thread.php at line 5

2.EWRporta_DataWriter_Discussion_Thread->_discussionPostSave() in XenForo/DataWriter/Discussion.php at line 453

3.XenForo_DataWriter_Discussion->_postSave() in XenForo/DataWriter.php at line 1397

4.XenForo_DataWriter->save() in XenForo/DataWriter/DiscussionMessage/Post.php at line 103

5.XenForo_DataWriter_DiscussionMessage_Post->_messagePostSave() in XenForo/DataWriter/DiscussionMessage.php at line 587

6.XenForo_DataWriter_DiscussionMessage->_postSave() in XenForo/DataWriter.php at line 1397

7.XenForo_DataWriter->save() in XenForo/LikeHandler/Post.php at line 20

8.XenForo_LikeHandler_Post->incrementLikeCounter() in XenForo/Model/Like.php at line 236

9.XenForo_Model_Like->likeContent() in XenForo/ControllerPublic/Post.php at line 372

10. XenForo_ControllerPublic_Post->actionLike() in XenForo/FrontController.php at line 347

11. XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134

XenForo_FrontController->run() in /home/XXX/public_html/xenforo/index.php at line 13