[TYPO3-english] Extbase Pluigin error: Ext Direct error in "TYPO3\CMS\Core\ExtDirect\ExtDirectApi" with namespace

[Marcus Bieber]

Hi everybody,

I have follwing error:

"#1297645190: Ext Direct error in "TYPO3\CMS\Core\ExtDirect\ExtDirectApi" with namespace: "TYPO3"\n Try to clear the TYPO3 cache and / or use paramater no_cache=1 as parameter in URL typo3/ajax.php\n\n Check also the following points:\n - configuration in ext_localconf.php: registration key should be like "TYPO3.MyExtension.Sample"\n - URL typo3/ajax.php: namespace parameter should be like: "TYPO3.MyExtension"\n - javascript: method\'s name should be like: "TYPO3.MyExtension.Sample.myMethod"\n"

Typo3 6.2.27
Extbase Extension through ExtensionBuilder

Error on Page with a plugin of that Extension.

ext_tables.php:

\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin(
    'MyVendor.' . $_EXTKEY,
	'Joblist',
	'Joblist'
);

ext_localconf.php:

\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
    'MyVendor.' . $_EXTKEY,
	'Joblist',
	array(
		'Job' => 'list',

	),
	// non-cacheable actions
	array(
        'Job' => 'list',
	)
);

The only solution I found is here in last Block (german):
typo3.net / forum / thematik / zeige / thema / 118843 /
(sorry not allowed to post links)

The advice to change Vendor did not help.

Any advice?

Thanks and regards
Marcus