Fledermaus 8.9.2 Release

2026-07-29

We're pleased to present Fledermaus version 8.9.2. In this release, we improved how Fledermaus renders and visualizes text items. Read below for details.

Improvements

Enhancements have been implemented in Fledermaus's text rendering within the scene. The visualizer now processes text rendering up to 30% more efficiently.

Bugs

The Geodetic configuration dialog no longer experiences a crash when the information tab is selected for a QGFVOM.
Resolved an issue wherein line objects failed to retain their assigned colours following the saving and subsequent reopening of a scene.
Resolved an issue where the imagery import progress dialog displayed an incorrect status message.

Known Issues

Issue	Summary	Affects Version/s	Priority	Notes
Bug	Installer - EPSG database not updated to latest version. This problem occurs if you have Fledermaus 8.7.2, Qimera 2.7.6, Qinsy 9.7.11 or an earlier version installed. You can now check your EPSG database here in the Help > About menu or in the Geodectic Configuration	8.8.0	↓ Low	You will need to manually remove the old EPSG database and copy the new version 12.025 into the Geodetic Resources folder.
Bug	Tools and Docks - Video - Fledermaus slows down and freezes after some time. Working with videos in the Video Files and Player dock may cause slowdowns or freezes. This issue results from updating our video display library to fix a security vulnerability in https://qpssoftware.scrollhelp.site/fledermaus/fledermaus-8-7-2-release.	8.8.1, 8.8.2, 8.8.3	↑ High	This is a situation with the third-party Library. We are investigating options to give the user better results.
Bug	Licensing - Opening older versions of Fledermaus may deactivate your license	8.8.0	↓ Low	The fix is to manually copy the DLLs (found in the link below) into that older version’s installation folder as noted in steps 1 and 2: https://qpssoftware.scrollhelp.site/lm/network-adapter-error-troubleshooting-steps

Issue

Summary

Affects Version/s

Priority

Notes

Bug

Installer - EPSG database not updated to latest version. This problem occurs if you have Fledermaus 8.7.2, Qimera 2.7.6, Qinsy 9.7.11 or an earlier version installed. You can now check your EPSG database here in the Help > About menu or in the Geodectic Configuration

8.8.0

↓ Low

You will need to manually remove the old EPSG database and copy the new version 12.025 into the Geodetic Resources folder.

Bug

Tools and Docks - Video - Fledermaus slows down and freezes after some time.

Working with videos in the Video Files and Player dock may cause slowdowns or freezes.

This issue results from updating our video display library to fix a security vulnerability in https://qpssoftware.scrollhelp.site/fledermaus/fledermaus-8-7-2-release.

8.8.1, 8.8.2, 8.8.3

↑ High

This is a situation with the third-party Library. We are investigating options to give the user better results.

Bug

Licensing - Opening older versions of Fledermaus may deactivate your license

8.8.0

↓ Low

The fix is to manually copy the DLLs (found in the link below) into that older version’s installation folder as noted in steps 1 and 2:

https://qpssoftware.scrollhelp.site/lm/network-adapter-error-troubleshooting-steps

Long-running known issues

Click to expand...

Issue	Summary	Affects Version/s	Priority	Notes
Bug	There are situations when mesh creation gets stuck in 3% of the normal calculation of the meshes when working with the PCL algorithm. Workaround is to use the Quick Neighborhood algorithm when working with QPDs	8.2.0	↓ Low	This is a situation with the third-party Library. We are investigating to prevent the situation of unexpected exit.
Bug	When working with multiple passes of MBES data, the differing passes can result in a suboptimal mesh solution. Workaround is to create the mesh with the best resulting one pass mesh.	8.2.0	↓ Low	This is a situation with the third-party Library. We are investigating options to give the user better results when working with these types of datasets.
Limitation	Fledermaus does not support 2018 AutoCAD dxf/dwg files on the Linux platform but Windows and Mac should be fine. Workaround is to export prior versions of dxf and dwg.	8.3.0	↑ High	This is dependent on the Third-Party Library, we are working on upgrading this in the medium term.
Limitations	Tiff compressions not available for Mac and Linux - limiting the builds for Mac and Linux on latest versions	8.4.3	↑ High	We are working on the updates of the Third Party Libraries to be able to get the other OS systems supported in latest release