TYPO3 Core

TCA for fe_users was changed in TYPO3 4.2 in typo3/sysext/cms/tbl_cms.php. As a result, you don't see the fields that were defined by sr_feuser_register in the backend anymore (first_name, last_name, gender).

TYPO3 4.1.5, line 274 - 277:
'palettes' => Array (
'1' => Array('showitem' => 'disable, starttime, endtime'),
'2' => Array('showitem' => 'title,company')
)

TYPO3 4.2, line 281 - 283:
'palettes' => Array (
'1' => Array('showitem' => 'title,company')
)

I don't know if this was intentional or not (might be a typo). However, this causes a bug in sr_feuser_register 2.5.9 in ext_tables.php, line174:
$TCA['fe_users']['palettes']['2']['showitem'] = str_replace('title,', 'gender,first_name,last_name,title,', $TCA['fe_users']['palettes']['2']['showitem']);

This fails as there is no ['palettes']['2'].

(issue imported from #M8300)