no points after node convert

Issue Summary

i'm using the http://drupal.org/project/node_convert module to convert my nodes to other nodetypes. all my users should be able to do that and i need the possibility to get points for that but after the conversion i get the following output...

"Notice: Undefined property: stdClass::$revision in userpoints_nc_revision_node_update() (line 13 of C:\Programme\...\sites\all\modules\userpoints_nc\userpoints_nc_revision\userpoints_nc_revision.module)."

i'm to noob to figure it out whats the problem.

any ideas?

thanks

konsul