将我的 Intershop 7.9 项目导入 Intershop Studio（版本：4.6.3）时，出现以下错误。任何想法，这里有什么问题？
!ENTRY org.eclipse.core.jobs 4 2 2017-08-23 17:45:56.282
!MESSAGE An internal error occurred during: "Import projects into workspace.".
!STACK 0
java.lang.ArrayIndexOutOfBoundsException: -1
at org.eclipse.core.runtime.Path.segment(Path.java:1050)
at com.intershop.studio.cartridge.generation.EnfinityProjectType.guessProjectType(EnfinityProjectType.java:51)
at com.intershop.studio.cartridge.generation.CartridgeProjectEclipseConfigurator.getEnfinityProjectType(CartridgeProjectEclipseConfigurator.java:224)
at com.intershop.studio.cartridge.generation.CartridgeProjectEclipseConfigurator.getVariables(CartridgeProjectEclipseConfigurator.java:255)
at com.intershop.studio.cartridge.generation.CartridgeProjectEclipseConfigurator.configure(CartridgeProjectEclipseConfigurator.java:136)
at com.intershop.studio.cartridge.generation.CartridgeProjectEclipseConfigurator.configure(CartridgeProjectEclipseConfigurator.java:116)
at com.intershop.studio.cartridge.gradle.CartridgeGradleImportOperation.perform(CartridgeGradleImportOperation.java:230)
at com.intershop.studio.cartridge.ui.wizard.CartridgeGradleProjectImportWizard$1.runInWorkspace(CartridgeGradleProjectImportWizard.java:65)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:39)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)