diff --git a/wire/core/PagesPathFinder.php b/wire/core/PagesPathFinder.php
index a3ea6cfa..ff55c3a1 100644
--- a/wire/core/PagesPathFinder.php
+++ b/wire/core/PagesPathFinder.php
@@ -1925,7 +1925,7 @@ class PagesPathFinder extends Wire {
 		$segments = $this->languageSegments();
 		$segments[] = Pages::defaultRootName;
 		foreach($segments as $segment) {
-			if(!strlen($segment)) continue;
+			if($segment === null || !strlen($segment)) continue;
 			if($path !== "/$segment" && strpos($path, "/$segment/") !== 0) continue;
 			list(,$path) = explode("/$segment", $path, 2); 
 			if($path === '') $path = '/';
diff --git a/wire/modules/Fieldtype/FieldtypeRepeater/FieldtypeRepeater.module b/wire/modules/Fieldtype/FieldtypeRepeater/FieldtypeRepeater.module
index e4bdd36f..feb25ea2 100644
--- a/wire/modules/Fieldtype/FieldtypeRepeater/FieldtypeRepeater.module
+++ b/wire/modules/Fieldtype/FieldtypeRepeater/FieldtypeRepeater.module
@@ -75,7 +75,7 @@ class FieldtypeRepeater extends Fieldtype implements ConfigurableModule {
 	 * @var bool
 	 *
 	 */
-	static protected $isReady = false;
+	static protected $isReady = array();
 
 	/**
 	 * When non-zero, a deletePageField function call occurred and we shouldn't re-create any repeater parents
diff --git a/wire/modules/Inputfield/InputfieldMarkup.module b/wire/modules/Inputfield/InputfieldMarkup.module
index 21aef816..eb9f3085 100644
--- a/wire/modules/Inputfield/InputfieldMarkup.module
+++ b/wire/modules/Inputfield/InputfieldMarkup.module
@@ -90,7 +90,7 @@ class InputfieldMarkup extends InputfieldWrapper {
 		if($markupFunction !== null & is_callable($markupFunction)) {
 			$out .= "\n" . call_user_func($markupFunction, $this);
 		}
-		if(strlen($markupText)) {
+		if(is_string($markupText) && strlen($markupText)) {
 			$out .= "\n" . $markupText;
 		}
 		$out = trim($out);
diff --git a/wire/modules/LanguageSupport/LanguageSupportPageNames.module b/wire/modules/LanguageSupport/LanguageSupportPageNames.module
index 76f65b34..79972789 100644
--- a/wire/modules/LanguageSupport/LanguageSupportPageNames.module
+++ b/wire/modules/LanguageSupport/LanguageSupportPageNames.module
@@ -512,7 +512,7 @@ class LanguageSupportPageNames extends WireData implements Module, ConfigurableM
 			// special case: homepage
 			$name = $isDefault ? '' : $page->get("name$language"); 
 			if($isDefault && $this->useHomeSegment) $name = $page->name;
-			if($name == Pages::defaultRootName || !strlen($name)) return '/';
+			if($name == Pages::defaultRootName || $name === null || !strlen($name)) return '/';
 			return $template->slashUrls ? "/$name/" : "/$name";
 		}