Can't migrate from Cloud to Server

2015-01-22 11:06:50,037 ERROR [Long running task: Importing data] [confluence.importexport.xmlimport.BackupImporter] importEntities Cannot import the entities: 
 -- url: /admin/restore-local-file.action | userName: gonchik | referer: http://192.168.139.201:8090/admin/backup.action | action: restore-local-file
com.atlassian.confluence.importexport.ImportExportException: Unable to complete import: Error while importing backup: not-null property references a null or transient value: com.atlassian.confluence.pages.Attachment.contentType
	at com.atlassian.confluence.importexport.xmlimport.DefaultXmlImporter.doImport(DefaultXmlImporter.java:76)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEntities(BackupImporter.java:387)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEverything(BackupImporter.java:355)
	at com.atlassian.confluence.importexport.xmlimport.FileBackupImporter.importEverything(FileBackupImporter.java:119)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter$1.doInTransactionWithoutResult(BackupImporter.java:193)
	at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:33)
	at com.atlassian.confluence.importexport.xmlimport.RestorePluginStateStoreTransactionCallbackDecorator.doInTransaction(RestorePluginStateStoreTransactionCallbackDecorator.java:47)
	at com.atlassian.confluence.importexport.xmlimport.RestoreBandanaValuesTransactionCallbackDecorator.doInTransaction(RestoreBandanaValuesTransactionCallbackDecorator.java:48)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.doImportInternal(BackupImporter.java:206)
	at com.atlassian.confluence.importexport.Importer.doImport(Importer.java:75)
	at com.atlassian.confluence.importexport.DefaultImportExportManager.performImportInternal(DefaultImportExportManager.java:82)
	at com.atlassian.confluence.importexport.DefaultImportExportManager.performImport(DefaultImportExportManager.java:72)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy93.performImport(Unknown Source)
	at com.atlassian.confluence.importexport.actions.ImportLongRunningTask.runInternal(ImportLongRunningTask.java:88)
	at com.atlassian.confluence.util.longrunning.ConfluenceAbstractLongRunningTask.run(ConfluenceAbstractLongRunningTask.java:26)
	at com.atlassian.confluence.util.longrunning.ManagedTask.run(ManagedTask.java:35)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.xml.sax.SAXException: Error while importing backup: not-null property references a null or transient value: com.atlassian.confluence.pages.Attachment.contentType
net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: com.atlassian.confluence.pages.Attachment.contentType
	at com.atlassian.confluence.importexport.xmlimport.parser.BackupParser.endElement(BackupParser.java:53)
	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at com.atlassian.security.xml.RestrictedXMLReader.parse(RestrictedXMLReader.java:103)
	at com.atlassian.confluence.importexport.xmlimport.DefaultXmlImporter.parseBackup(DefaultXmlImporter.java:108)
	at com.atlassian.confluence.importexport.xmlimport.DefaultXmlImporter.doImport(DefaultXmlImporter.java:60)
	... 32 more
Caused by: net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: com.atlassian.confluence.pages.Attachment.contentType
	at net.sf.hibernate.impl.SessionImpl.checkNullability(SessionImpl.java:1302)
	at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:954)
	at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:883)
	at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:837)
	at com.atlassian.confluence.importexport.xmlimport.ImportProcessorContext.saveObject(ImportProcessorContext.java:286)
	at com.atlassian.confluence.importexport.xmlimport.persister.ReflectiveObjectPersister.persist(ReflectiveObjectPersister.java:207)
	at com.atlassian.confluence.importexport.xmlimport.DefaultImportProcessor.persist(DefaultImportProcessor.java:46)
	at com.atlassian.confluence.importexport.xmlimport.DefaultImportProcessor.processObject(DefaultImportProcessor.java:36)
	at com.atlassian.confluence.importexport.xmlimport.parser.BackupParser.endElement(BackupParser.java:49)
	... 44 more
2015-01-22 11:06:50,055 ERROR [Long running task: Importing data] [confluence.importexport.actions.ImportLongRunningTask] runInternal Failure during import
 -- url: /admin/restore-local-file.action | userName: gonchik | referer: http://192.168.139.201:8090/admin/backup.action | action: restore-local-file
com.atlassian.confluence.importexport.ImportExportException: com.atlassian.confluence.importexport.ImportExportException: Unable to complete import: Error while importing backup: not-null property references a null or transient value: com.atlassian.confluence.pages.Attachment.contentType
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEntities(BackupImporter.java:397)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEverything(BackupImporter.java:355)
	at com.atlassian.confluence.importexport.xmlimport.FileBackupImporter.importEverything(FileBackupImporter.java:119)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter$1.doInTransactionWithoutResult(BackupImporter.java:193)
	at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:33)
	at com.atlassian.confluence.importexport.xmlimport.RestorePluginStateStoreTransactionCallbackDecorator.doInTransaction(RestorePluginStateStoreTransactionCallbackDecorator.java:47)
	at com.atlassian.confluence.importexport.xmlimport.RestoreBandanaValuesTransactionCallbackDecorator.doInTransaction(RestoreBandanaValuesTransactionCallbackDecorator.java:48)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
	at com.atlassian.confluence.importexport.xmlimport.BackupImporter.doImportInternal(BackupImporter.java:206)
	at com.atlassian.confluence.importexport.Importer.doImport(Importer.java:75)
	at com.atlassian.confluence.importexport.DefaultImportExportManager.performImportInternal(DefaultImportExportManager.java:82)
	at com.atlassian.confluence.importexport.DefaultImportExportManager.performImport(DefaultImportExportManager.java:72)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy93.performImport(Unknown Source)
	at com.atlassian.confluence.importexport.actions.ImportLongRunningTask.runInternal(ImportLongRunningTask.java:88)
	at com.atlassian.confluence.util.longrunning.ConfluenceAbstractLongRunningTask.run(ConfluenceAbstractLongRunningTask.java:26)
	at com.atlassian.confluence.util.longrunning.ManagedTask.run(ManagedTask.java:35)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)