[TYPO3-mvc] Path-Problem - tca not found

[Kerstin Finke]

Hi list,

I'm sure I'm having a very stupid path-problem, but I can't find it.

I built an extension with tca. But the tca is not found, no form is 
shown in the backend when I click "new data record" in backend and chose 
my backend-modul.

When I say "save and close" anyway the data record is saved (empty of 
course) in the database.


The log says:

		Core: Error handler (BE): PHP Warning: include(): Failed opening 
'C:/xampp/htdocs/mydomain/typo3conf/C:/xampp/htdocs/mydomain/typo3conf/ext/my_extension/Configuration/TCA/hotel.php' 
for inclusion 
(include_path='C:/xampp/htdocs/mydomain/typo3/contrib/pear/;.;\xampp\php\PEAR') 
in 
C:\xampp\htdocs\mydomain\typo3\sysext\core\Classes\Utility\GeneralUtility.php 
line 3884

I'm working on TYPO3 6.0.2 and extbase 6.0.

Could someone give a hint please?

Thanks!
Kerstin