diff --git a/src/currency.js b/src/currency.js
index 9192f9e66..63831f830 100644
--- a/src/currency.js
+++ b/src/currency.js
@@ -61,13 +61,16 @@ Globalize.prototype.currencyFormatter = function( currency, options ) {
 
 	// Get properties given style ("symbol" default, "code" or "name").
 	cldr.on( "get", validateRequiredCldr );
-	properties = ({
-		accounting: currencySymbolProperties,
-		code: currencyCodeProperties,
-		name: currencyNameProperties,
-		symbol: currencySymbolProperties
-	}[ style ] )( currency, cldr, options );
-	cldr.off( "get", validateRequiredCldr );
+	try {
+		properties = ({
+			accounting: currencySymbolProperties,
+			code: currencyCodeProperties,
+			name: currencyNameProperties,
+			symbol: currencySymbolProperties
+		}[ style] )( currency, cldr, options );
+	} finally {
+		cldr.off( "get", validateRequiredCldr );
+	}
 
 	// options = options minus style, plus raw pattern.
 	options = objectOmit( options, "style" );
diff --git a/src/date.js b/src/date.js
index db19c99c6..4453a914f 100644
--- a/src/date.js
+++ b/src/date.js
@@ -187,12 +187,15 @@ Globalize.prototype.dateToPartsFormatter = function( options ) {
 		ianaListener = validateRequiredIana( timeZone );
 		cldr.on( "get", ianaListener );
 	}
-	pattern = dateExpandPattern( options, cldr );
-	validateOptionsSkeleton( pattern, options.skeleton );
-	properties = dateFormatProperties( pattern, cldr, timeZone );
-	cldr.off( "get", validateRequiredCldr );
-	if ( ianaListener ) {
-		cldr.off( "get", ianaListener );
+	try {
+		pattern = dateExpandPattern( options, cldr );
+		validateOptionsSkeleton( pattern, options.skeleton );
+		properties = dateFormatProperties( pattern, cldr, timeZone );
+	} finally {
+		cldr.off( "get", validateRequiredCldr );
+		if ( ianaListener ) {
+			cldr.off( "get", ianaListener );
+		}
 	}
 
 	// Create needed number formatters.
@@ -240,19 +243,21 @@ Globalize.prototype.dateParser = function( options ) {
 
 	args = [ options ];
 
-	cldr.on( "get", validateRequiredCldr );
-	if ( timeZone ) {
-		cldr.on( "get", validateRequiredIana( timeZone ) );
-	}
-	pattern = dateExpandPattern( options, cldr );
-	validateOptionsSkeleton( pattern, options.skeleton );
-	tokenizerProperties = dateTokenizerProperties( pattern, cldr, timeZone );
-	parseProperties = dateParseProperties( cldr, timeZone );
-	cldr.off( "get", validateRequiredCldr );
-	if ( timeZone ) {
-		cldr.off( "get", validateRequiredIana( timeZone ) );
+	try {
+		cldr.on( "get", validateRequiredCldr );
+		if ( timeZone ) {
+			cldr.on( "get", validateRequiredIana( timeZone ) );
+		}
+		pattern = dateExpandPattern( options, cldr );
+		validateOptionsSkeleton( pattern, options.skeleton );
+		tokenizerProperties = dateTokenizerProperties( pattern, cldr, timeZone );
+		parseProperties = dateParseProperties( cldr, timeZone );
+	} finally {
+		cldr.off( "get", validateRequiredCldr );
+		if ( timeZone ) {
+			cldr.off( "get", validateRequiredIana( timeZone ) );
+		}
 	}
-
 	numberParser = this.numberParser({ raw: "0" });
 
 	returnFn = dateParserFn( numberParser, parseProperties, tokenizerProperties );
diff --git a/src/number.js b/src/number.js
index 0e4bf83fc..1d6f0f932 100644
--- a/src/number.js
+++ b/src/number.js
@@ -80,18 +80,19 @@ Globalize.prototype.numberFormatter = function( options ) {
 	validateDefaultLocale( cldr );
 
 	cldr.on( "get", validateCldr );
-
-	if ( options.raw ) {
-		pattern = options.raw;
-	} else {
-		pattern = numberPattern( options.style || "decimal", cldr );
+	try {
+		if ( options.raw ) {
+			pattern = options.raw;
+		} else {
+			pattern = numberPattern( options.style || "decimal", cldr );
+		}
+
+		properties = numberFormatProperties( pattern, cldr, options );
+		fnArgs = [ properties ];
+	} finally {
+		cldr.off( "get", validateCldr );
 	}
 
-	properties = numberFormatProperties( pattern, cldr, options );
-	fnArgs = [ properties ];
-
-	cldr.off( "get", validateCldr );
-
 	validateDigits( properties );
 
 	if ( options.compact ) {
diff --git a/src/plural.js b/src/plural.js
index b9781546c..a67e9aa7a 100644
--- a/src/plural.js
+++ b/src/plural.js
@@ -65,8 +65,11 @@ Globalize.prototype.pluralGenerator = function( options ) {
 	isOrdinal = type === "ordinal";
 
 	cldr.on( "get", validateCldr );
-	cldr.supplemental([ "plurals-type-" + type, "{language}" ]);
-	cldr.off( "get", validateCldr );
+	try {
+		cldr.supplemental([ "plurals-type-" + type, "{language}" ]);
+	} finally {
+		cldr.off( "get", validateCldr );
+	}
 
 	MakePlural.rules = {};
 	MakePlural.rules[ type ] = cldr.supplemental( "plurals-type-" + type );
diff --git a/src/relative-time.js b/src/relative-time.js
index 4c36886af..a4d5f8314 100644
--- a/src/relative-time.js
+++ b/src/relative-time.js
@@ -61,9 +61,11 @@ Globalize.prototype.relativeTimeFormatter = function( unit, options ) {
 	validateDefaultLocale( cldr );
 
 	cldr.on( "get", validateCldr );
-	properties = relativeTimeProperties( unit, cldr, options );
-	cldr.off( "get", validateCldr );
-
+	try {
+		properties = relativeTimeProperties( unit, cldr, options );
+	} finally {
+		cldr.off( "get", validateCldr );
+	}
 	numberFormatter = this.numberFormatter( options );
 	pluralGenerator = this.pluralGenerator();
 
diff --git a/test/functional/currency/currency-formatter.js b/test/functional/currency/currency-formatter.js
index d4ef833c8..5ced5df02 100644
--- a/test/functional/currency/currency-formatter.js
+++ b/test/functional/currency/currency-formatter.js
@@ -73,6 +73,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.currencyFormatter( "USD" );
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.test( "should return a currency formatter", function( assert ) {
 	var de, zh;
 
diff --git a/test/functional/date/date-parser.js b/test/functional/date/date-parser.js
index b9f9305d8..12625be07 100644
--- a/test/functional/date/date-parser.js
+++ b/test/functional/date/date-parser.js
@@ -106,6 +106,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.dateParser({ skeleton: "invalid-stuff" });
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.test( "should return a parser", function( assert ) {
 	extraSetup();
 	assertParseDate( assert, "Wed, Sep 15, 2010 AD", { skeleton: "GyMMMEd" },
diff --git a/test/functional/date/format-date-to-parts.js b/test/functional/date/format-date-to-parts.js
index cae9fcd53..024039f5c 100644
--- a/test/functional/date/format-date-to-parts.js
+++ b/test/functional/date/format-date-to-parts.js
@@ -109,6 +109,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.formatDateToParts( date, { skeleton: "invalid-stuff" } );
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.test( "should validate parameters (2/2)", function( assert ) {
 	extraSetup();
 
diff --git a/test/functional/number/format-number.js b/test/functional/number/format-number.js
index a171ca9c0..343c9e1ca 100644
--- a/test/functional/number/format-number.js
+++ b/test/functional/number/format-number.js
@@ -60,6 +60,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.formatNumber( pi );
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.test( "should format decimal style", function( assert ) {
 	extraSetup();
 
diff --git a/test/functional/plural/plural.js b/test/functional/plural/plural.js
index 3f628ea4a..c91858247 100644
--- a/test/functional/plural/plural.js
+++ b/test/functional/plural/plural.js
@@ -63,6 +63,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.plural( 1 );
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.test( "should return plural form", function( assert ) {
 	extraSetup();
 	assert.equal( Globalize.plural( 0 ), "other" );
diff --git a/test/functional/relative-time/format-relative-time.js b/test/functional/relative-time/format-relative-time.js
index b898c3ccd..f0bfa2c25 100644
--- a/test/functional/relative-time/format-relative-time.js
+++ b/test/functional/relative-time/format-relative-time.js
@@ -34,6 +34,14 @@ QUnit.test( "should validate CLDR content", function( assert ) {
 	});
 });
 
+QUnit.test( "should un-register event listener", function( assert ) {
+	try {
+		Globalize.formatRelativeTime( 1, "day" );
+	} catch ( error ) {
+		assert.equal( Globalize.cldr.ee.getListeners( "get" ).length, 0 );
+	}
+});
+
 QUnit.module( ".formatRelativeTime( value, unit [, options] )", {
 	setup: function( ) {
 		Globalize.load( likelySubtags, enDateFields, deDateFields,