• 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.

Unable to download Logbook Pro...


New member
Apr 23, 2005
I purchased the required codes and am all set to download Logbook Pro w/PDA andAVCataloger. However, I keep getting a security alert from Windows that states the downloaded files have been blocked due to a problem with the signature. I have tried to download with the firewall off, same result. Would include a screenshot, but not sure how to do that. When I investigate further, the alert says that the signature is "invalid or malformed". Any suggestions?


Windows XP Pro
Okay, resolved the issue. I was trying to 'RUN' the program from the install rather than 'SAVING' the file and opening/installing later. Works fine now.