[TYPO3] tt_products: Error message when creating a new product record

[Lars Brinkmann]

Hello!

ich habe tt_products mit den benötigten Extensions frisch installiert.
Habe dann einen SysOrdner "Produkte" angelegt und wollte hier über
Liste -> Neuen Datensatz anlegen -> Produkte ein erstes Produkt
anlegen. Dabei kommt dann aber folgende Fehlermeldung:

I installed tt_products with needed Extensions (see list below). I
created a SysFolder "products".

When I tried to create a new record ( List -> New Record -> Product ),
the following error occured:

Fatal error: Cannot use string offset as an array in
......./typo3_src/t3lib/class.t3lib_div.php on line 3700

With Google, I found that it could be a problem with a
language-record. But unfortunately it doesn't help me. As a further
Website language, I created english with uid=2 (Default is german, but
it is not listed)

Is there anybody, who can tell me, how to get tt_products to run?

TYPO3 4.1.2
tt_products 2.5.7
fh_library 0.0.19
div 0.1.0
table 0.1.17

Best regards and sorry for the bad english, Lars Brinkmann