I turned on debugging and here is the actual error:
[User Error] Bad RecordClassName '' and $baseClass not set
POST /admin/EditForm/field/SWFFile/EditFileForm
Line 2762 in /home/artman16/public_html/sapphire/core/model/DataObject.php
Source
2753 foreach($records as $record) {
2754 if(empty($record['RecordClassName'])) {
2755 $record['RecordClassName'] = $record['ClassName'];
2756 }
2757 if(class_exists($record['RecordClassName'])) {
2758 $results[] = new $record['RecordClassName']($record);
2759 } else {
2760 if(!$baseClass) {
2761 user_error("Bad RecordClassName '{$record['RecordClassName']}' and "
2762 . "\$baseClass not set", E_USER_ERROR);
2763 } else if(!is_string($baseClass) || !class_exists($baseClass)) {
2764 user_error("Bad RecordClassName '{$record['RecordClassName']}' and bad "
2765 . "\$baseClass '$baseClass not set", E_USER_ERROR);
2766 }
2767 $results[] = new $baseClass($record);
2768 }
Trace
* Bad RecordClassName '' and $baseClass not set
Line 2762 of DataObject.php
* DataObject->buildDataObjectSet(MySQLQuery,DataObjectSet)
Line 745 of File.php
* File->instance_get(,,,,DataObjectSet)
Line 2714 of DataObject.php
* DataObject::get(File)
Line 118 of SortableDataObject.php
* SortableDataObject->onBeforeWrite(,,,,,,)
Line 963 of Object.php
* Object->extend(onBeforeWrite,)
Line 829 of DataObject.php
* DataObject->onBeforeWrite()
Line 348 of File.php
* File->onBeforeWrite()
Line 936 of DataObject.php
* DataObject->write()
Line 153 of Upload.php
* Upload->load(Array,Uploads)
Line 170 of Upload.php
* Upload->loadIntoFile(Array,File,Uploads)
Line 178 of FileIFrameField.php
* FileIFrameField->save(Array,Form,SS_HTTPRequest)
Line 300 of Form.php
* Form->httpSubmission(SS_HTTPRequest)
Line 137 of RequestHandler.php
* RequestHandler->handleRequest(SS_HTTPRequest)
Line 155 of RequestHandler.php
* RequestHandler->handleRequest(SS_HTTPRequest)
Line 155 of RequestHandler.php
* RequestHandler->handleRequest(SS_HTTPRequest)
Line 155 of RequestHandler.php
* RequestHandler->handleRequest(SS_HTTPRequest)
Line 147 of Controller.php
* Controller->handleRequest(SS_HTTPRequest)
Line 281 of Director.php
* Director::handleRequest(SS_HTTPRequest,Session)
Line 124 of Director.php
* Director::direct(/admin/EditForm/field/SWFFile/EditFileForm)
Line 127 of main.php