---
title: "iOS: In-app messages cause error"
slug: "ios-in-app-issue-linker"
updated: 2026-06-09T22:59:53Z
published: 2026-06-09T22:59:53Z
canonical: "docs.xtremepush.com/ios-in-app-issue-linker"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xtremepush.com/llms.txt
> Use this file to discover all available pages before exploring further.

# iOS: In-app messages cause error

How to address error: "[NSURL getParameters]: unrecognized selector sent to instance"

This problem is caused by a known iOS linker bug, in which a static library category is not being loaded by Xcode, and is remedied by a small change to your `BuildSettings`.

Go to **Build Settings**.

In the **Linking** subsection, look for the **Other Linking Flags** key.

To **Other Linking Flags** add the value `-force_load` and the path to the `libXPush.a` file, For example, `-force_load $(SRCROOT)/libXPush.a` .

This command loads all objects and categories in a static library and will solve the problem.