[TYPO3-shop] blank page with 2.7.7 and typo3 6.2

[Michael Schumann]

Hello List,

is there some fix for the blank page problem with tt_products 2.7.7 and
typo3 6.2?

The error message is:
Core: Error handler (FE): PHP Warning:
require_once(/www/htdocs/w00581d2/typo3/typo3/sysext/cms/tslib/class.tslib_p
ibase.php) [<a href='function.require-once'>function.require-once</a>]:
failed to open stream: No such file or directory in
/www/htdocs/w00581d2/typo3/typo3conf/ext/tt_products/pi1/class.tx_ttproducts
_pi1_base.php line 49

On
http://www.jambage.com/kontakt/forum/shop-system/ansichten-im-frontend/list/
6398.html i read from franz:
Edit the file class.tx_ttproducts_pi1_base.php on line 49:
Comment it out:
// require_once(PATH_tslib.'class.tslib_pibase.php');

But than there is always a blank page and the error message still:
Core: Error handler (FE): PHP Warning:
require_once(PATH_t3libclass.t3lib_stdgraphic.php) [<a
href='function.require-once'>function.require-once</a>]: failed to open
stream: No such file or directory in
/www/htdocs/w00581d2/typo3/typo3conf/ext/tt_products/eid/class.tx_ttproducts
_db.php line 44

What can i do?
Thanks
Michael