BUG call recording not working Asterisk 11.15/Ubuntu 14.04

[ampster]

call recording not working Asterisk 11.15/Ubuntu 14.04
maybe someone will recognize the fix for this issue.
one touch recording is not recording to a file, see below

from /var/log/asterisk/full
[2016-01-31 10:20:56] VERBOSE[29449][C-00000000] pbx.c: -- Executing [s@macro-one-touch-record:2] System("SIP/voipms-00000000", "/var/lib/asterisk/bin/one_touch_record.php SIP/voipms-00000000") in new stack
[2016-01-31 10:20:56] VERBOSE[29462] app_mixmonitor.c: == Begin MixMonitor Recording SIP/voipms-00000000
[2016-01-31 10:20:56] WARNING[29462] file.c: Unable to open file ///.wav: Permission denied
[2016-01-31 10:20:56] ERROR[29462] app_mixmonitor.c: Cannot open ///.wav

The debug file shows:
2016-Jan-31 10:20:56 /var/www/html/admin/modules/callrecording/bin/one_touch_record.php:33
[NOTICE]: Undefined offset: 1

Any ideas appreciated.

Anthony