[TYPO3-commerce] Fatal error: Call to a member function includeLLFile() on a non-object in sysext/impexp/app/index.php on line 115

[Idar Creative]

Hi List,

When clikking on the "Export" button in the Orders section of Commerce,

I get the following error: Fatal error: Call to a member function 
includeLLFile() on a non-object in 
.../typo3_src-4.2.8/typo3/sysext/impexp/app/index.php on line 115

I don't know if this a Commerce error is or a TYPO3 bug.

My client wants to have an export (excel)  functionality to import orders in 
a financial software.

Do I need to try to solve this error or find a extension?

The versions are
TYPO3 4.2.8
Commerce 0.10.1

Thanks for any help/suggestion

Idar Sprock