Page tree
Skip to end of metadata
Go to start of metadata


  • When running Fledermaus for the first time right click the Fledermaus icon and choose 'Run as Administrator'.
  • If you are looking for our free viewer please see our iView4D page.
  • If you are wondering if Fledermaus will run on your system please visit our Hardware Requirements and Platform Overview pages.

QPD Compatibility


Fledermaus 7.5 uses a new version of the QPD format that is incompatible with the previous releases of Fledermaus (7.4.5.b and older), Qimera (1.0.7 and older), and QINSy (older than 2015.11.28.1) software. Opening an older QPD file in Fledermaus 7.5 will upgrade it to the new version, making the QPD unusable in older versions of the noted QPS applications. If this will break your current workflow, and you can not upgrade the newer versions of Qimera and QINSy, we do not advise upgrading to Fledermaus 7.5 at this time.

The new version of the QPD format is compatible with the current and future versions of Qimera (1.1 and newer), Fledermaus (7.5.0 and newer), and QINSy (2015.11.28.1 and newer).



To download our products please login with your Support Ticket System account or Download account. If you require a download account please click on the Register New Account button next to the Login button.


This is hidden on purpose. Will never be visible


If you already have an account for our Support Ticket System you do not need to register! To download our products, just login with the same username and password.


The information provided will be used to contact you when there is information about the downloaded product. None of this information will be shared or distributed. See our Privacy Policy for details.

Please click Close after registration is succeeded.


Please enter the e-mail address used for registration. You will receive an e-mail with a link which will enable you to change your password.


Password reset is only for download accounts. If you have a QPS Support Ticket account you can reset your password here.

Please click Close after submitting your e-mail address











  • No labels

1 Comment

  1. Thanks! I missed that change.