[TYPO3-english] White page in tt_products version 2.6.1 [Problem]

[Valentín Miguel]

Hi community,
I have a problem with my tt_products installation. I have installed the 
tt_products version 2.6.1 with my typo3 version 4.2.10 and I made all 
steps here:
 >http://typo3.org/documentation/document-library/extension-manuals/doc_shop/0.0.2/view/1/2/
but when I want to see the page only show a white page.