Cannot import uClinux to Nios II IDE (Eclipse)

Hi, i'm trying to import the uClinux-dist to Nios2 IDE (eclipse) like the Altera Wiki says alterawiki.com/wiki/Nios_II_IDE .

But I have some troubles in the second step, importing the uClinux dist.

When I try to finish the import, an error message came saying:

Failed to import project

Reason: Makefile is not Software Build Tools compatible

And the console says:

Executing: nios2-app-update-makefile --app-dir . --get-all --show-names (C:\Users\Augus\Desktop\uClinux-dist)

SEVERE: null

java.lang.NullPointerException

at com.altera.embeddedsw.app_lib.src_editor.MakefileSourceListEditor.processMakefile(MakefileSourceListEditor.java:211)

at com.altera.embeddedsw.app_lib.src_editor.MakefileSourceListEditor.<init>(MakefileSourceListEditor.java:187)

at com.altera.embeddedsw.commandline.app_lib.AppUpdateMakefileCommand.getUpdater(AppUpdateMakefileCommand.java:129)

at com.altera.embeddedsw.commandline.app_lib.AbstractUpdateMakefileCommandLine.execute(AbstractUpdateMakefileCommandLine.java:98)

at com.altera.embeddedsw.utilities.commandline.AbstractBuildCommandLine.executeCommand(AbstractBuildCommandLine.java:150)

at com.altera.embeddedsw.commandline.app_lib.AppUpdateMakefileCommand.main(AppUpdateMakefileCommand.java:167)

SEVERE: nios2-app-update-makefile failed.

Please, I need help here!!!