Ошибка при установке плагина Google App Engine Eclipse

Question

Я пытаюсь установить плагин Google App Engine Eclipse, и у меня возникают некоторые странные ошибки. Я нахожусь в Mac OS X 10.10.3, используя Eclipse 4.4 Luna (издание J2EE).

При установке указанного плагина я получаю ошибки снизу. Любая идея, что может быть неправильным?

An error occurred while collecting items to be installed 
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=). 
Problems downloading artifact: osgi.bundle,org.eclipse.wb.core.lib,1.7.0.r44x201405021445. 
File has invalid content:/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar 
Invalid content:lib/nebula-cwt.jar 
The file "lib/nebula-cwt.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-collections-3.2.1.jar 
The file "lib/commons-collections-3.2.1.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-lang-2.5.jar 
The file "lib/commons-lang-2.5.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/nebula-cdatetime.jar 
The file "lib/nebula-cdatetime.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-logging-1.1.1.jar 
The file "lib/commons-logging-1.1.1.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-beanutils-1.8.0.jar 
The file "lib/commons-beanutils-1.8.0.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/asm-all-3.3.1.jar 
The file "lib/asm-all-3.3.1.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/MVEL-fork.jar 
The file "lib/MVEL-fork.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-digester-2.0.jar 
The file "lib/commons-digester-2.0.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-io-2.0.1.jar 
The file "lib/commons-io-2.0.1.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/guava-13.0.1.jar 
The file "lib/guava-13.0.1.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Invalid content:lib/commons-primitives-1.0.jar 
The file "lib/commons-primitives-1.0.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile1759626140156902181.jar" has been tampered! 
Problems downloading artifact: osgi.bundle,org.eclipse.wb.runtime.lib,1.7.0.r44x201405021445. 
File has invalid content:/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile2638864348494436902.jar 
Invalid content:lib/cglib-nodep-2.2.jar 
The file "lib/cglib-nodep-2.2.jar" in the jar "/var/folders/k_/85g34xb57j94_hn61f0zy1500000gn/T/signatureFile2638864348494436902.jar" has been tampered! 

Answer 1

Я повторно загрузил Eclipse, использовал новое рабочее пространство, и теперь он волшебным образом работал.