OU Moodle with new quiz reports

On the Edit page alter the grade of a question.
On the Grades page select one student to regrade.
Hit the 'Regrade selected attempts'
Observe the following

ERROR: syntax error at or near "{" at character 18

SELECT qa.* FROM {$CFG->prefix}quiz_attempts qa WHERE qa.id IN ( 1431) AND qa.quiz = 132 AND qa.preview = 0

• line 796 of lib/dmllib.php: call to debugging()
• line 1088 of lib/dmllib.php: call to get_recordset_sql()
• line 633 of mod/quiz/report/overview/report.php: call to get_records_sql()
• line 69 of mod/quiz/report/overview/report.php: call to quiz_overview_report->regrade_selected_attempts()
• line 94 of mod/quiz/report.php: call to quiz_overview_report->display()