From 2fa7d22e431d4d08b5cf835dea24bbfe708454da Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Sat, 7 Jul 2018 17:26:03 +0200
Subject: [PATCH] Ignore invalid PIP field values when `objectProperty` is used

See #2545
---
 .../pip/TXmlGuiPackageInstallationPlugin.class.php   | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/lib/system/devtools/pip/TXmlGuiPackageInstallationPlugin.class.php b/wcfsetup/install/files/lib/system/devtools/pip/TXmlGuiPackageInstallationPlugin.class.php
index 6ef09a2e2b..6e0ed9f4e1 100644
--- a/wcfsetup/install/files/lib/system/devtools/pip/TXmlGuiPackageInstallationPlugin.class.php
+++ b/wcfsetup/install/files/lib/system/devtools/pip/TXmlGuiPackageInstallationPlugin.class.php
@@ -344,8 +344,16 @@ XML;
 				else if ($node->getObjectProperty() !== $node->getId()) {
 					$key = $node->getObjectProperty();
 					
-					if (isset($data[$key])) {
-						$node->value($data[$key]);
+					try {
+						if (isset($data[$key])) {
+							$node->value($data[$key]);
+						}
+					}
+					catch (\InvalidArgumentException $e) {
+						// ignore invalid argument exceptions for fields with object property
+						// as there might be multiple fields with the same object property but
+						// different possible values (for example when using single selection
+						// form fields to set the parent element)
 					}
 				}
 			}
-- 
2.20.1