Don't add empty property parameters.

apps/contacts/ajax/contact/addproperty.php

@@ -141,11 +141,15 @@ foreach ($parameters as $key=>$element) {
 		// And it probably shouldn't be done here anyways :-/
 		foreach($element as $e) {
 			if($e != '' && !is_null($e)) {
-				$vcard->children[$line]->parameters[] = new Sabre_VObject_Parameter($key, $e);
+				if(trim($e)) {
+					$vcard->children[$line]->parameters[] = new Sabre_VObject_Parameter($key, $e);
+				}
 			}
 		}
 	} else {
+		if(trim($element)) {
 			$vcard->children[$line]->parameters[] = new Sabre_VObject_Parameter($key, $element);
+		}
 	}
 }
 $checksum = md5($vcard->children[$line]->serialize());

apps/contacts/ajax/contact/saveproperty.php

@@ -133,17 +133,21 @@ if(!$value) {
 					debug('Adding parameter: '.$key);
 					if(is_array($parameter)) {
 						foreach($parameter as $val) {
-							debug('Adding parameter: '.$key.'=>'.$val);
+							if(trim($val)) {
+								debug('Adding parameter: '.$key.'=>'.$val);
+								$vcard->children[$line]->add(new Sabre_VObject_Parameter(
+									$key,
+									strtoupper(strip_tags($val)))
+								);
+							}
+						}
+					} else {
+						if(trim($parameter)) {
 							$vcard->children[$line]->add(new Sabre_VObject_Parameter(
 								$key,
-								strtoupper(strip_tags($val)))
+								strtoupper(strip_tags($parameter)))
 							);
 						}
-					} else {
-						$vcard->children[$line]->add(new Sabre_VObject_Parameter(
-							$key,
-							strtoupper(strip_tags($parameter)))
-						);
 					}
 				}
 			}