Bug Error When Saving Points Settings

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vBulletin 4.2.x
After a upgrade from vb 4.2.2 to vb 4.2.5 I get this error when trying to save points settings:

Call to undefined method vB_DataManager::vB_DataManager() on line 76 in /forum/dbtech/vbactivity/includes/class_dm_type.php
#0 /forum/dbtech/vbactivity/includes/class_core.php(373): vBActivity_DataManager_Type->vBActivity_DataManager_Type(Object(vB_Registry), 2)
#1 /forum/dbtech/vbactivity/actions/admin/points.php(98): VBACTIVITY::initDataManager('Type', Object(vB_Registry), 2)
#2 /forum/admincp/vbactivity.php(83): include_once
#3 {main}

Edit to add: I thought that the issue might be that, along with the forum upgrade, that I also upgraded from PHP 5.3 to PHP 7, so I downgraded back to PHP 5.3 but that still didn't solve the issue. The only change that I saw was that when I attempted to save points settings all I get is a blank white page. I upgraded the PHP to 5.6 now and it's the same thing (blank page).

Is the version of vbactivity I'm using not compatible with vb 4.2.5? I noticed that almost all of dbetch modifications for me aren't working after I upgraded my forum (Likes system, vboptimize, vbshout). I don't have the latest versions of those programs, it's been a while since I installed them all.
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DragonByte Technologies

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Hello Optimus,

This ticket has now been closed with the status Not A Bug.

We hope your issue or question has been addressed to your satisfaction. If not, please feel free to re-open it by clicking this link.

If you have any further issues or questions, please feel free to start a new support ticket via the button at the top of every page.

Thank you!
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