problems with products widget

Hello
I’m having problems with te products widget, I can’t see a preview after choosing a categorie and choosing some products. going to step 2, no preview, giving a name and try to save gives: “saving error”.

what is strange is: The Bestsellers widget works fine.

Updated today to version 1.1.1, still the same problem.
Website http://www.workshopsinfrankrijk.nl

http://ww.wp.xz.cn/extend/plugins/bolcom-partnerprogramma-wordpress-plugin/