error message shows when I tried to create nodes which don't have datetime field

I've got this error message when I was trying to create a page or simpelnews node.

"warning: Invalid argument supplied for foreach() in xxxxx/sites/all/modules/node_repeat/node_repeat.module on line 111."

The version I used was 2.0-alpha1;however, when I downgraded to 1.1 version, it's normal then.