RT GSync: Google Calendar, Contacts, Drive Sync

Installed GSync and when I ran cron.php (via command line) for the first time I got this error, and I'm sure it wasn't supposed to happen any errors, right?

$ php -f cron.php
PHP Notice:  Undefined index: gContact$groupMembershipInfo in /home/user/mydomain.com/custom/include/Google/ContactHelper.php on line 43
PHP Stack trace:
PHP   1. {main}() /home/user/mydomain.com/cron.php:0
PHP   2. SugarCronJobs->runCycle() /home/user/mydomain.com/cron.php:74
PHP   3. SugarCronJobs->executeJob() /home/user/mydomain.com/include/SugarQueue/SugarCronJobs.php:228
PHP   4. SchedulersJob->runJob() /home/user/mydomain.com/include/SugarQueue/SugarCronJobs.php:188
PHP   5. call_user_func_array:{/home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536}() /home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536
PHP   6. googleContactsSync() /home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536
PHP   7. GoogleHelper->performSync() /home/user/mydomain.com/custom/modules/Schedulers/Ext/ScheduledTasks/scheduledtasks.ext.php:67
PHP   8. GoogleHelper->syncContacts() /home/user/mydomain.com/custom/include/Google/GoogleHelper.php:42
PHP   9. ContactHelper::updateFromGoogle() /home/user/mydomain.com/custom/include/Google/GoogleHelper.php:105

Notice: Undefined index: gContact$groupMembershipInfo in /home/user/mydomain.com/custom/include/Google/ContactHelper.php on line 43

Call Stack:
    0.0004     233872   1. {main}() /home/user/mydomain.com/cron.php:0
    0.2487   17990600   2. SugarCronJobs->runCycle() /home/user/mydomain.com/cron.php:74
    1.7651   42422576   3. SugarCronJobs->executeJob() /home/user/mydomain.com/include/SugarQueue/SugarCronJobs.php:228
    1.7651   42422576   4. SchedulersJob->runJob() /home/user/mydomain.com/include/SugarQueue/SugarCronJobs.php:188
    1.7654   42416136   5. call_user_func_array:{/home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536}() /home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536
    1.7654   42417032   6. googleContactsSync() /home/user/mydomain.com/modules/SchedulersJobs/SchedulersJob.php:536
    1.8021   42439040   7. GoogleHelper->performSync() /home/user/mydomain.com/custom/modules/Schedulers/Ext/ScheduledTasks/scheduledtasks.ext.php:67
    1.8022   42438264   8. GoogleHelper->syncContacts() /home/user/mydomain.com/custom/include/Google/GoogleHelper.php:42
    1.8148   42514968   9. ContactHelper::updateFromGoogle() /home/user/mydomain.com/custom/include/Google/GoogleHelper.php:105