Here are the errors I found in the "kaltura_api_v3.log" previously provided.
2016-03-08 18:55:14 [0.000172] [107.152.128.122] [665107164] [120] [API] [KalturaFrontController->errorHandler] WARN: /opt/kaltura/app/api_v3/lib/types/KalturaObject.php line 377 - include_once(/opt/kaltura/app/cache//api_v3/fromObject/Map_KalturaUser_kuser.php): failed to open stream: No such file or directory
2016-03-08 18:55:14 [0.000078] [107.152.128.122] [665107164] [121] [API] [KalturaFrontController->errorHandler] WARN: /opt/kaltura/app/api_v3/lib/types/KalturaObject.php line 377 - include_once(): Failed opening '/opt/kaltura/app/cache//api_v3/fromObject/Map_KalturaUser_kuser.php' for inclusion (include_path='/opt/kaltura/app/vendor/htmlpurifier/library:/opt/kaltura/app/vendor/ZendFramework/library:.:/usr/share/pear:/usr/share/php:/opt/kaltura/app:/opt/kaltura/app/vendor/symfony:/opt/kaltura/app/vendor/symfony/vendor:/opt/kaltura/app/vendor/ZendFramework/library:/opt/kaltura/app/alpha:/opt/kaltura/app/alpha/lib:/opt/kaltura/app/alpha/apps/kaltura/lib')Curently, this is the only errors I see it the log right now. I will re-run the DropFolder process with fewer files to import.