• Apple released it's annual update - iOS 17 for both iPhones and iPads. After preliminary testing we see no issues with both Logbook Pro and APDL on iOS 17. We will continue our thorough testing with the public release and follow up should we find any issues.

    We are giving a green light on iOS 17 for all of our iOS apps.

Invalid File Message


New member
Apr 16, 2005
When I open LBP I am getting an error message that says "invlaid file" and my LBP is locked up; I can't get past this message. Just reloaded on a new hardrive with Windows XP Home. Using Alt- Cntrl-Del to quit the program.
Confirm you "installed" Logbook Pro then restored your prior data file? Logbook Pro must be properly installed using the installer, then restore your prior backup or open the .LBK file for use when prompted initially with the NEW, OPEN, RESTORE dialog. If you need further assistance, please submit a support ticket.

Great support. I went to support ticket and Neil came up with fix. Thanks for the great response.