求教：android ChatDemoUI3.0编译的时候出现下面错误

android studio 2.0 导入android ChatDemoUI3.0编译的时候出现下面错误，请教高手这是什么异常？
=========================================================================================================Information:Gradle tasks [:easeUIDemo:assembleDebug]
:easeUI:preBuild UP-TO-DATE
:easeUI:preReleaseBuild UP-TO-DATE
:easeUI:compileReleaseNdk UP-TO-DATE
:easeUI:compileLint
:easeUI:copyReleaseLint UP-TO-DATE
:easeUI:checkReleaseManifest
:easeUI:preDebugAndroidTestBuild UP-TO-DATE
:easeUI:incrementalDebugBuildInfoGenerator
:easeUI:preDebugBuild
:easeUI:preDebugUnitTestBuild UP-TO-DATE
:easeUI:preReleaseUnitTestBuild UP-TO-DATE
:easeUI:prepareComAndroidSupportSupportV42311Library
:easeUI:prepareReleaseDependencies
:easeUI:compileReleaseAidl
:easeUI:compileReleaseRenderscript
:easeUI:generateReleaseBuildConfig
:easeUI:generateReleaseAssets UP-TO-DATE
:easeUI:mergeReleaseAssets
:easeUI:generateReleaseResValues UP-TO-DATE
:easeUI:generateReleaseResources
:easeUI:mergeReleaseResources
:easeUI:processReleaseManifest
:easeUI:processReleaseResources
:easeUI:generateReleaseSources
:easeUI:compileReleaseJavaWithJavac
注: 某些输入文件使用或覆盖了已过时的 API。
注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。
注: 某些输入文件使用了未经检查或不安全的操作。
注: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。
:easeUI:extractReleaseAnnotations
:easeUI:mergeReleaseProguardFiles UP-TO-DATE
:easeUI:packageReleaseRenderscript UP-TO-DATE
:easeUI:packageReleaseResources
:easeUI:processReleaseJavaRes UP-TO-DATE
:easeUI:transformResourcesWithMergeJavaResForRelease
:easeUI:transformClassesAndResourcesWithSyncLibJarsForRelease
ImmutableJarInput{name=main, file=D:\Myandroid\ChatDemoUI3.01\easeUI\build\intermediates\transforms\mergeJavaRes\release\jars\2\3\main.jar, contentTypes=RESOURCES, scopes=PROJECT,PROJECT_LOCAL_DEPS, status=NOTCHANGED}
ImmutableDirectoryInput{name=release, file=D:\Myandroid\ChatDemoUI3.01\easeUI\build\intermediates\classes\release, contentTypes=CLASSES, scopes=PROJECT, changedFiles={}}
:easeUI:mergeReleaseJniLibFolders
:easeUI:transformNative_libsWithMergeJniLibsForRelease
:easeUI:transformNative_libsWithSyncJniLibsForRelease
:easeUI:bundleRelease
:easeUIDemo:incrementalDebugBuildInfoGenerator
:easeUIDemo:preBuild UP-TO-DATE
:easeUIDemo:preDebugBuild
:easeUIDemo:checkDebugManifest
:easeUIDemo:preReleaseBuild UP-TO-DATE
:easeUIDemo:prepareChatDemoUI301EaseUIUnspecifiedLibrary
:easeUIDemo:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
:easeUIDemo:prepareDebugDependencies
:easeUIDemo:compileDebugAidl
:easeUIDemo:compileDebugRenderscript
:easeUIDemo:generateDebugBuildConfig
:easeUIDemo:processDebugManifest
:easeUIDemo:injectDebugBootstrap
Instrumented com.easemob.chatuidemo.DemoApplication with fast deploy
:easeUIDemo:generateDebugAssets UP-TO-DATE
:easeUIDemo:mergeDebugAssets
:easeUIDemo:generateDebugResValues UP-TO-DATE
:easeUIDemo:generateDebugResources
:easeUIDemo:mergeDebugResources
:easeUIDemo:processDebugResources
:easeUIDemo:generateDebugSources
:easeUIDemo:compileDebugJavaWithJavac
注: 某些输入文件使用或覆盖了已过时的 API。
注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。
注: 某些输入文件使用了未经检查或不安全的操作。
注: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。
:easeUIDemo:compileDebugNdk UP-TO-DATE
:easeUIDemo:compileDebugSources
:easeUIDemo:fastDeployDebugExtractor UP-TO-DATE
:easeUIDemo:generateDebugInstantRunAppInfo UP-TO-DATE
:easeUIDemo:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
:easeUIDemo:transformClassesWithInstantRunForDebug
IncrementalSupportVisitor Visiting com/easemob/chatuidemo/BuildConfig
IncrementalSupportVisitor Visiting com/easemob/chatuidemo/Constant
IncrementalSupportVisitor Visiting com/easemob/chatuidemo/DemoApplication
IncrementalSupportVisitor Visiting com/easemob/chatuidemo/DemoHelper$1
IncrementalSupportVisitor Visiting com/easemob/chatuidemo/DemoHelper$10
:easeUIDemo:transformClassesWithInstantRunForDebug FAILED
Error:Execution failed for task ':easeUIDemo:transformClassesWithInstantRunForDebug'.
> java.lang.ClassNotFoundException: com.easemob.exceptions.EaseMobException
Information:BUILD FAILED
Information:Total time: 22.206 secs
Information:1 error
Information:0 warnings
Information:See complete output in console