Fatal error: Cannot use string offset as an array in /var/www/kbhvineyard/typosite/kbhvineyard/typo3conf/ext/tl_conference/lib/class.cg_tracks.php on line 27

Call Stack:
    0.0012     636864   1. {main}() /t3hosting/typo3_src-4.4.7/index.php:0
    0.0015     638624   2. require('/t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/index_ts.php') /t3hosting/typo3_src-4.4.7/index.php:84
    0.0926   10672992   3. tslib_fe->INTincScript() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/index_ts.php:464
    0.1006   12203744   4. tslib_fe->INTincScript_process() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/class.tslib_fe.php:3202
    0.1151   14056680   5. tslib_cObj->USER() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/class.tslib_fe.php:3263
    0.1152   14057088   6. tslib_cObj->callUserFunction() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/class.tslib_content.php:809
    0.1153   14066736   7. call_user_func_array() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/class.tslib_content.php:6753
    0.1153   14066800   8. tx_tlconference_pi1->main() /t3hosting/typo3_src-4.4.7/typo3/sysext/cms/tslib/class.tslib_content.php:0
    0.1633   15158912   9. tx_tlconference_pi1->registrationForm() /var/www/kbhvineyard/typosite/kbhvineyard/typo3conf/ext/tl_conference/pi1/class.tx_tlconference_pi1.php:301
    0.1784   15197704  10. cg_tracks->renderForm() /var/www/kbhvineyard/typosite/kbhvineyard/typo3conf/ext/tl_conference/pi1/class.tx_tlconference_pi1.php:1627