AmNav causes an error while trying to use yiic

[FrankZwiers]

While trying to use yiic(eg. to create a migration) AmNav produces the following error.

Fatal error: Call to a member function getCommand() on a non-object in /home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/ConsoleApp.php on line 146

Call Stack:
    0.0001     233456   1. {main}() /home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/yiic:0
    0.0003     258528   2. require_once('/home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/yiic.php') /home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/yiic:4
    0.0140    1898568   3. YiiBase::createApplication() /home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/yiic.php:69
    0.0141    1900200   4. CApplication->__construct() /home/frank/Sites/xxxxx.xx/website/craft/app/framework/YiiBase.php:121
    0.0162    2159512   5. Craft\ConsoleApp->init() /home/frank/Sites/xxxxx.xx/website/craft/app/framework/base/CApplication.php:165
    0.0653    6220952   6. Craft\PluginsService->loadPlugins() /home/frank/Sites/xxxxx.xx/website/craft/app/etc/console/ConsoleApp.php:77
    0.0935    7525944   7. Craft\AmNavPlugin->init() /home/frank/Sites/xxxxx.xx/website/craft/app/services/PluginsService.php:138
    0.0935    7526496   8. Craft\ConsoleApp->on() /home/frank/Sites/craft-plugins2/amnav/1.1.8/AmNavPlugin.php:78

[hubertprein]

Should be fixed. Let me know if you run into any problems.