Closed Unassigned: MaskedEdit null reference exception [27998]

Hi,

I get this error when loading a page of my project:
0x800a138f - JavaScript runtime error: Unable to get property 'value' of undefined or null reference.
MaskedEdit.debug.js

The code that fails is:

// normalize initial value (Date)
ConvFmtDateTime: function(input, loadFirst) {
var arr = this._SplitDateTime(input),
partdt = arr[0],
parttm = arr[1];

if(parttm.split(" ").length == 2)
parttm += " " + parttm.split(" ")[1];

partdt = this.ConvFmtDate(partdt, loadFirst);
parttm = this.ConvFmtTime(parttm, loadFirst);

return partdt + " " + parttm;
},

Input parameters are:
input = "2/12/2015 10:50:07"
loadFirst = true

parttm is undefined so the line "if(parttm.split(" ").length == 2)" throws the exception.

Regards,
Josep