[TYPO3-dev] Extend existing extensions

[Sascha Bieler]

> May be it is cached and not executed.
Unfortunately not.


>If there is no echo, then the XCLASS has not been called. You must check
>with debug why the $GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS'] is
>not set for pilmailform.
When I debug($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']); I see that 
everything is loaded fine in 4.1.5 but not in 4.1.6, so the question is, how 
to extend extensions the right way. Can I read about it somewhere?

Regards,
Sascha