Thanks for your prompt reaction!
I DLed and installed com_hikashop_starter_1.5.5_2011-12-21 on top of com_hikashop_starter_1.5.5_2011-12-20 (see forum enty above) - same setup, same result, unfortunately. Changing a field and clicking Save in Google Crome (16.0.912.63 m) still gives
Checkout workflow invalid. The modification is ignored. See the documentation for more information on how to configure that option
Still works w/ MSIE 9.04.
BTW - there is an annoying problem in the Language file pop-up editor. When you use the keyboard arrow button to move upwards, it often stays in the same line. It's only a nuiseance - you can get to where you want with a click of the mouse, but still, when you're editig loads of text, you want to keep your hands on the keyboard...
/Hz