[TYPO3-dev] Problem with including class in ext_tables.php

[Georg Ringer]

Hello,

I've got troubles with including a class in ext_tables.php. Inlcuding 
works fine in BE-module and in FE-plugin.

If I call these 2 lines:
require_once(t3lib_extMgm::extPath('rggooglemap').'res/class.tx_rggooglemap_table.php');
$this->genericTableXYZ = 3lib_div::makeInstance('tx_rggooglemap_table');

I get 30+ error msgs like "Warning: Problem with method call - please 
report this bug in /html/typo3conf/ext/rggooglemap/ext_tables.php on 
line 139"

139: t3lib_div::loadTCA($singleTable); ($singleTable exists)
145: ... t3lib_extMgm::extRelPath(...)

the included file looks like this: http://phpfi.com/227235

Help would be really great!
thanks a lot
georg