[TYPO3-english] Powermail multiple languages ERROR

[Web Essentials - Support (Man Math)]

Hi Alexander,

I am using TYPO3 6.1.7 and powermail extension 2.0.10.

It works well for me for default language, but when I switch to second 
language it produced this below error message:

The default controller for extension "Powermail" and plugin "Pi1" can 
not be determined. Please check for 
TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin() in your 
ext_localconf.php

Am i missed some configuration or any suggestion idea?

Thanks,
Man

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