10.24.4

LTS

August 19, 2025

Mendix Studio Pro is our low-code IDE for professional developers. It's a powerful visual model-driven development environment to build apps on the Mendix Platform. With Studio Pro you can easily create, change, integrate, test and deploy your applications, all in one place. Moreover, you can manage branch lines and security as well as extend your app with custom code using the built-in editors. Click 'Download Studio Pro' to get the installer for free (Windows OS required*). Learn more about the installation and the Studio Pro capabilities in our documentation. Not a professional developer? Learn How Mendix supports different developer profiles .Before installing, please read the Release Notes to learn about improvements, bug fixes, backwards compatibility, breaking changes and known issues. *If you are using a Mac, check out these instructions first.

Release Notes - **Release date: August 19, 2025** ## Fixes - We fixed a [known issue](https://docs.mendix.com/releasenotes/studio-pro/10.18/#ki-debugger-reconnect) where the debugger did not reconnect when restarting an app using the React client. - We fixed a [known issue](https://docs.mendix.com/releasenotes/studio-pro/10.18/#ki-debugger-runtime-only) when locally re-running with runtime-only changes while using the React client. They are now properly loaded by the runtime. - We added the refresh functionality for the Marketplace content when a session times out. The reload button will now close the details page and refresh the search tab view to ensure the latest information is displayed. - We fixed an issue in offline synchronization (using the **Synchronize unsynchronized objects** and **Synchronize all** actions) that resulted in error log statements and *System.SynchronizationError* objects containing a text *Changing member failed for security reasons, no write access for changed member*. That was caused by the offline client trying to synchronize a change for a member that was inaccessible by that user. - We improved the exception handling of Studio Pro when necessary .NET components are missing with a user-friendly message instead of an error pop-up. - We fixed an issue where Studio Pro crashed due to an XPath constraint being too long or complex to parse correctly. Now a consistency error message is shown instead. - We upgraded React Native version to 0.77.3. This addresses an issue that caused the app to stop working after a reload. - We fixed an issue when locally re-running with runtime-only changes while using the React client. They are now properly loaded by the runtime. ### Breaking Changes - We removed the numeric part of IDs in the HTML and added `l` or `p` prefixes for layouts and pages. For example, `89.PCP.MyApps_Overview.snippetCall4` will now be `p.PCP.MyApps_Overview.snippetCall4` instead. The purpose of those numeric parts was to ensure uniqueness of the IDs, however, they are actually not needed here as a page and layout already have unique identifiers. Furthermore, their pseudo-random nature meant that rebuilding an application resulted in more changes than needed, limiting the cachability of Mendix applications.