WD php: Invalid argument supplied for foreach() in sites/all/modules/nodeorder/nodeorder.module on line 598

When running an import script to import nodes I get:

WD php: Invalid argument supplied for foreach() in sites/all/modules/nodeorder/nodeorder.module on line 598

I'm first doing node_save($node);and then afterwards taxonomy_node_save($node, $terms);, so

  foreach ($node->taxonomy as $key => $value) {

will break.

The code is still working though.