Getting Error on Google Maps Plugin

I am getting this error after updating the plugin:

Warning: session_start() [function.session-start]: open(/home/content/59/10343959/tmp/sess_23oddm07niqtni59psek3s3fo6, O_RDWR) failed: No such file or directory (2) in /home/content/59/10343959/html/wp-content/plugins/wpmu_dev_maps_plugin/inc/external/wpmu-lib/functions-wpmulib.php on line 69