Default controller of 2nd plugin in extension can not be determined - typo3

Question

I made an extbase extension with extension builder in TYPO3 6.2 and so far I have one working frontend plugin. But now I want to add another plugin that can use the same Classes of that extension and I can't even successfully add it.
When clicking on the page that should show my new plugin I receive this error:
Caught exception: The default controller for extension ...
and plugin "Stats" can not be determined. Please check for
TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin() in your
ext_localconf.php.
This is what I did previously:
After adding a new plugin "Stats" in the extension builder I see following code in my ext_localconf.php:
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
'CC.' . $_EXTKEY,
'Appoints',
array(
'Appointment' => 'list, show, new, create, edit',
'Feedback' => 'new, create, list',
),
// non-cacheable actions
array(
'Appointment' => 'list, show, new, create, edit',
'Feedback' => 'new, create, list',
)
);
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
'CC.' . $_EXTKEY,
'Stats',
array(
'Appointment' => 'statistic',
),
// non-cacheable actions
array(
'Appointment' => 'statistic',
)
);
And in ext_tables.php I got:
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin(
'CC.' . $_EXTKEY,
'Appoints',
'Appointments'
);
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin(
'CC.' . $_EXTKEY,
'Stats',
'Statstics'
);
It seems the extension builder did everything perfectly.
In my AppointmentController.php
(which is correctly namespaced - namespace Vendor\Extname\Controller;) I added:
public function statisticAction() {
echo "testing";
}
Then I added the new plugin to my page in the backend. (Please ignore the spelling error in the picture I already corrected it but it wasn't the cause of my problem)
So what could be the reason? And how can I solve this the easiest way?
Should I type something into the switchableControllerActions in extension builder since I'm using the same controller with both plugins but different actions? If so - what?
EDIT: I found out it must have something to do with my backend page, idk what - but if I change the plugin on the same page it works,...I'm searching for the causing differences between the two pages that might cause this...

Answer 1

You made a typo in your ext_localconf.php when you declared your second plugin,
"Stats": \TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
'CC.' . $_EXTKEY,
'Stats',
array(
'Appointment' => 'statistic', ==> 'Statistics' => 'statistic'
),
// non-cacheable actions
array(
'Appointment' => 'statistic', ==> 'Statistics' => 'statistic'
)
);
because "Statistics" is the right controller name for that plugin if you called it "StatisticsController".

Answer 2

Like everyone in the comments stated all I did was correct and should've worked...
I noticed that my plugins worked on one backend page but didn't work on another.
As I couldn't find any differences between those two pages that caused this I deleted both of them and created two new ones inserting one plugin into each page.
Now it works...so my solution if you encounter a similar problem:
Before trying to dig too deep into the cause just try to delete a problematic backend page and create a new one. Maybe it can solve the problem, it did it for me.