Delete Avidyne Apps before Installing New Versions

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   Delete IFD Trainer and IFD100 apps before Installing New Versions of IFD Trainer and IFD100.
An existing forum post details troubleshooting a crash that occurred after installing the new IFD Trainer app:

	https://avidynelive.com/trainer-stuck-on-establishing-communications_topic2786.html

The solution--for now--is to delete the existing IFD Trainer and IFD100 apps from your iPad BEFORE installing the 10.3.2.2 versions. Why does this solve the problem?

Each app--IFD Trainer, IFD100 10.3, and IFD100 10.3.2.2--has independent memory and each app also shares data within an App Group.

If you download a chart, the chart gets stored in the App Group, and then the chart is immediately available to all the related apps. The App Group also stores common settings used in the apps. The problem occurred because the format for some of these settings differ between app versions. For this reason, the App Group must be removed. Because the App Group remains until the last of the apps that reference the App Group are deleted, all apps must be deleted before installing the new versions.

Until this problem is corrected through an app update, the solution is to remove all apps and then install the new versions. 

Edited by Gary Lutchansky - 30 Sep 2025 at 12:10pm

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Gary Lutchansky Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 12 Oct 2023 Location: Melbourne, FL Status: Offline Points: 59	Post Options Post Reply Quote Gary Lutchansky Report Post Thanks(2) Quote Reply Topic: Delete Avidyne Apps before Installing New Versions Posted: 30 Sep 2025 at 12:10pm
	Delete IFD Trainer and IFD100 apps before Installing New Versions of IFD Trainer and IFD100. An existing forum post details troubleshooting a crash that occurred after installing the new IFD Trainer app: https://avidynelive.com/trainer-stuck-on-establishing-communications_topic2786.html The solution--for now--is to delete the existing IFD Trainer and IFD100 apps from your iPad BEFORE installing the 10.3.2.2 versions. Why does this solve the problem? Each app--IFD Trainer, IFD100 10.3, and IFD100 10.3.2.2--has independent memory and each app also shares data within an App Group. If you download a chart, the chart gets stored in the App Group, and then the chart is immediately available to all the related apps. The App Group also stores common settings used in the apps. The problem occurred because the format for some of these settings differ between app versions. For this reason, the App Group must be removed. Because the App Group remains until the last of the apps that reference the App Group are deleted, all apps must be deleted before installing the new versions. Until this problem is corrected through an app update, the solution is to remove all apps and then install the new versions. Edited by Gary Lutchansky - 30 Sep 2025 at 12:10pm