I'm having issues every time I try to add a large file or multiple files to an item. It doesn't matter if I use the Dropbox plugin or the CSVimporter plugin. I'm able to add one or two small (e.g. 2 MG) files without problem. In the past, I was able to add files ~15 at a time, but any more than that would usually cause problems. The large files aren't unusually large, but if I'm trying to upload very many it always fails.
I've edited the "Fullsize Image Size" option in the general settings to a ridiculously high number in the hopes that was the problem. Is there anything else I can do? Imagemagick seems to be configured just fine.
The error message I receive is "Omeka_File_Derivative_Exception Something went wrong with image creation. Please notify an administrator." (The most recent example was an attempt to attach 6 jpegs for a total of about 45 MB). Here's the error log:
#0 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/File/Derivative/Image.php(114): Omeka_File_Derivative_Image::createImage('/tmp/6978ffe390...', '200', 'thumbnail')
#1 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/File/Derivative/Image.php(222): Omeka_File_Derivative_Image::createDerivativeImages('/tmp/6978ffe390...')
#2 /home/pplspc/pplspc.org/digital/application/models/File.php(248): Omeka_File_Derivative_Image::createAll('/tmp/6978ffe390...', 'image/jpeg')
#3 /home/pplspc/pplspc.org/digital/application/models/File/ProcessUploadJob.php(24): File->createDerivatives()
#4 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Job/Dispatcher/Adapter/Synchronous.php(25): File_ProcessUploadJob->perform()
#5 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Job/Dispatcher/Default.php(95): Omeka_Job_Dispatcher_Adapter_Synchronous->send('{"className":"F...', Array)
#6 /home/pplspc/pplspc.org/digital/application/models/File.php(70): Omeka_Job_Dispatcher_Default->send('File_ProcessUpl...', Array)
#7 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Record.php(282): File->afterInsert()
#8 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Record.php(561): Omeka_Record->runCallbacks(Array, Array)
#9 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Record.php(581): Omeka_Record->save('afterInsert')
#10 /home/pplspc/pplspc.org/digital/application/models/Item.php(303): Omeka_Record->forceSave()
#11 /home/pplspc/pplspc.org/digital/application/models/ItemBuilder.php(213): Item->saveFiles()
#12 /home/pplspc/pplspc.org/digital/application/libraries/globals.php(505): ItemBuilder->addFiles()
#13 /home/pplspc/pplspc.org/digital/plugins/Dropbox/plugin.php(82): insert_files_for_item()
#14 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Plugin/Broker.php(156): dropbox_save_files('Filesystem', Array, Array)
#15 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Plugin/Broker.php(182): Omeka_Plugin_Broker->callHook(Object(Item), 'Filesystem', Array)
#16 [internal function]: Omeka_Plugin_Broker->__call(Object(Item), Object(ArrayObject))
#17 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Record.php(304): Omeka_Plugin_Broker->before_save_form_item('dropbox_save_fi...', Array)
#18 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Record.php(803): Omeka_Record->runCallbacks('before_save_for...', Array)
#19 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Controller/Action.php(482): Omeka_Record->saveForm('before_save_for...', Array)
#20 /home/pplspc/pplspc.org/digital/application/controllers/ItemsController.php(99): Omeka_Controller_Action->editAction(Object(Item), Object(ArrayObject))
#21 /home/pplspc/pplspc.org/digital/application/libraries/Zend/Controller/Action.php(516): ItemsController->editAction(Array, Array)
#22 /home/pplspc/pplspc.org/digital/application/libraries/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('beforeSaveForm', Object(ArrayObject))
#23 /home/pplspc/pplspc.org/digital/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Array)
#24 /home/pplspc/pplspc.org/digital/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#25 /home/pplspc/pplspc.org/digital/application/libraries/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#26 /home/pplspc/pplspc.org/digital/application/libraries/Omeka/Core.php(165): Zend_Application->run('editAction')
#27 /home/pplspc/pplspc.org/digital/admin/index.php(44): Omeka_Core->run(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#28 {main}