• 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.

Didn't follow instructions


New member
Sep 21, 2008
So I forgot to uninstall Logbook pro 1.10.26 before installing 1.10.36. It seemed to install fine but then when I ran it, I got "Your data file appears to be corrupt. Please contact support@nc-software.com immediately and include a zip archive of your .LBK data file. If you have a recent backup (.BAK file) you may want to try restoring it at this time." The program then closes and I don't get the chance to replace the broken logbook with my backup :eek4:

Not a problem because I have backups of everything and haven't lost anything.

So I uninstalled the program, deleted all the files, then restarted the computer. I reinstalled Logbook Pro and it gives me the same problem. I figure there is some sort of file hidden somewhere I need to delete that is giving me this problem.
I ran across another .lbk logbook that I had saved and put it in my logbookpro folder. Worked just fine and it was able to start up from there and I was able to backup my logbook from the current .bak file.