Added error check for blank mask, which happens with some versions of jQuery.

.gitignore

@@ -4,3 +4,4 @@
 node_modules/
 bower_components/
 dist/
+/.project

dist/jquery.maskedinput.js

@@ -1,6 +1,6 @@
 /*
     jQuery Masked Input Plugin
-    Copyright (c) 2007 - 2015 Josh Bush (digitalbush.com)
+    Copyright (c) 2007 - 2016 Josh Bush (digitalbush.com)
     Licensed under the MIT license (http://digitalbush.com/projects/masked-input-plugin/#license)
     Version: 1.4.1
 */
@@ -20,7 +20,7 @@
     }, $.fn.extend({
         caret: function(begin, end) {
             var range;
-            if (0 !== this.length && !this.is(":hidden")) return "number" == typeof begin ? (end = "number" == typeof end ? end : begin, 
+            if (0 !== this.length && !this.is(":hidden") && this.get(0) === document.activeElement) return "number" == typeof begin ? (end = "number" == typeof end ? end : begin, 
             this.each(function() {
                 this.setSelectionRange ? this.setSelectionRange(begin, end) : this.createTextRange && (range = this.createTextRange(), 
                 range.collapse(!0), range.moveEnd("character", end), range.moveStart("character", begin), 
@@ -37,7 +37,7 @@
         },
         mask: function(mask, settings) {
             var input, defs, tests, partialPosition, firstNonMaskPos, lastRequiredNonMaskPos, len, oldVal;
-            if (!mask && this.length > 0) {
+            if ("object" == typeof mask && (mask = ""), !mask && this.length > 0) {
                 input = $(this[0]);
                 var fn = input.data($.mask.dataName);
                 return fn ? fn() : void 0;
@@ -47,7 +47,7 @@
                 placeholder: $.mask.placeholder,
                 completed: null
             }, settings), defs = $.mask.definitions, tests = [], partialPosition = len = mask.length, 
-            firstNonMaskPos = null, $.each(mask.split(""), function(i, c) {
+            firstNonMaskPos = null, mask = String(mask), $.each(mask.split(""), function(i, c) {
                 "?" == c ? (len--, partialPosition = i) : defs[c] ? (tests.push(new RegExp(defs[c])), 
                 null === firstNonMaskPos && (firstNonMaskPos = tests.length - 1), partialPosition > i && (lastRequiredNonMaskPos = tests.length - 1)) : tests.push(null);
             }), this.trigger("unmask").each(function() {
@@ -58,7 +58,7 @@
                     }
                 }
                 function getPlaceholder(i) {
-                    return settings.placeholder.charAt(i < settings.placeholder.length ? i : 0);
+                    return i < settings.placeholder.length ? settings.placeholder.charAt(i) : settings.placeholder.charAt(0);
                 }
                 function seekNext(pos) {
                     for (;++pos < len && !tests[pos]; ) ;
@@ -85,19 +85,20 @@
                         c = t;
                     }
                 }
-                function androidInputEvent() {
+                function androidInputEvent(e) {
                     var curVal = input.val(), pos = input.caret();
                     if (oldVal && oldVal.length && oldVal.length > curVal.length) {
                         for (checkVal(!0); pos.begin > 0 && !tests[pos.begin - 1]; ) pos.begin--;
                         if (0 === pos.begin) for (;pos.begin < firstNonMaskPos && !tests[pos.begin]; ) pos.begin++;
                         input.caret(pos.begin, pos.begin);
                     } else {
-                        for (checkVal(!0); pos.begin < len && !tests[pos.begin]; ) pos.begin++;
-                        input.caret(pos.begin, pos.begin);
+                        var lastEnteredValue = (checkVal(!0), curVal.charAt(pos.begin));
+                        pos.begin < len && (tests[pos.begin] ? tests[pos.begin].test(lastEnteredValue) && pos.begin++ : (pos.begin++, 
+                        tests[pos.begin].test(lastEnteredValue) && pos.begin++)), input.caret(pos.begin, pos.begin);
                     }
                     tryFireCompleted();
                 }
-                function blurEvent() {
+                function blurEvent(e) {
                     checkVal(), input.val() != focusText && input.change();
                 }
                 function keydownEvent(e) {

src/jquery.maskedinput.js

@@ -75,7 +75,7 @@ $.fn.extend({
             lastRequiredNonMaskPos,
             len,
             oldVal;
-
+        if(typeof mask === 'object') mask = '';
 		if (!mask && this.length > 0) {
 			input = $(this[0]);
             var fn = input.data($.mask.dataName)