TypeError: getFirst() is not defined.

[manuelmeister]

This happens when you try to save a "Programmpunkt". The spinners are displayed and the content is not saved.

dynamic_input.js:1944 Uncaught TypeError: this.list.getFirst is not a function
change @ dynamic_input.js:1944
wrapper.extend.$owner @ mootools-core-1.4.js:1644
(anonymous function) @ mootools-core-1.4.js:959
(anonymous function) @ mootools-core-1.4.js:1766
(anonymous function) @ mootools-core-1.4.js:220
each @ mootools-core-1.4.js:337
fireEvent @ mootools-core-1.4.js:1764
wrapper.extend.$owner @ mootools-core-1.4.js:1644
onSuccess @ mootools-core-1.4.js:5752
wrapper.extend.$owner @ mootools-core-1.4.js:1644
success @ mootools-core-1.4.js:6145
wrapper.extend.$owner @ mootools-core-1.4.js:1644
onStateChange @ mootools-core-1.4.js:5728
wrapper.extend.$owner @ mootools-core-1.4.js:1644
(anonymous function) @ mootools-core-1.4.js:959
mootools-core-1.4.js:5862 XHR finished loading: POST "http://ecamp.pfadiluzern.ch/index.php?app=program&cmd=load_gp_data&time=1472928742"
.send @ mootools-core-1.4.js:5862
wrapper.extend.$owner @ mootools-core-1.4.js:1644
get_update @ gp_class.js:201
(anonymous function) @ mootools-core-1.4.js:918