Migrating backup to iPhone problems

DickyDutch

Peter I have tried several times this evening to migrate (airdrop) a Full backup from my iPad to my iPhone 11 and keep getting the error message (see below) when selecting Restore on the iPhone. I have reinstalled STAGETRAXX on my iPhone ( thinking it might help) but the STAGETRAXX folder has now disappeared when using the Files app. I have carried out this migration process many times in the past without a hitch. Is it a problem with the new STAGETRAXX release perhaps? I am running version 3.4.6 on both devices.

Error message: Unexpected error
Unresolved error
Zip.ZipError.fileNotFound,[:]

peter

No, I haven't changed anything regarding the backup code. I see 2 possible problems that can cause this:

The backup file has not been transfered completely or there was not enough space when creating the backup file. Compare the file size on both iPads. Make sure there is enough space available before creating the backup.
Maybe a problem with special characters in the filename of one of the audio files? Do you have files with special charaters like üöä oder á?

DickyDutch

I eventually managed to update STAGETRAXX on my iPhone with the backup from my iPad by using iTunes file sharing - no problems. Afterward the successful restoration I deleted the backup file I had used from my iPhone.
But then as a test I airdropped the exact same backup file to my phone from my iPad. I checked the file size to ensure that whole file had been transferred as you advised. I also noticed that the backup file was listed as a STAGETRAXX song which I thought was strange- is this normal?
I then hit restore and the same error message appeared. In addition all my songs and playlists on the phone had been deleted!
I am not aware of any special characters in my file names.

peter

st3 files are shown as "Stage Traxx 3 Backup" file type in the Files app. Not as songs.

It is normal that your database and files are deleted before restoring a backup. The warning message even says so when asking if you want to restore the backup.

It seems that the backup file is somehow damaged with the Airdrop transfer. I guess the file is too large to send to me so I could debug it.

DickyDutch

The file is 5.12gig so too large to send to you for debugging. It appears that the Airdropping process corrupts it somehow. As I said previously the backup file was listed as a SONG when I viewed my STAGETRAXX song list on the iPhone just prior to trying to Restore - which I would not have expected. I will now try Airdropping the backup file to my second (older) iPad and see what happens.

DickyDutch

Have just airdropped the backup file to my other iPad and restored it no problem. Airdropped the same file to my iPhone again and already the file is listed as a song in STAGETRAXX app list of songs! (Not Files app). Tried attaching a screenshot to this post but function doesn’t seem to work. Just pressed Restore and error message is displayed.

DickyDutch

Have just carried out the following test. I airdropped the backup file from my iPad to iPhone then immediately airdropped it back from the phone to the iPad. So at this point the same file is on both devices. I then restored the file successfully to the iPad proving that the file was not damaged by airdropping. But then I tried to restore the file to the iPhone and an error occurred. It seems like the STAGETRAXX implementation on the iPhone doesn’t handle airdropped backup files.

peter

Good news and bad news.

Good news: I can reproduce the problem!
Bad news: It happens with every Airdropped backup file no matter the size.
Workaround: After airdropping it to the target device. Switch to the Files app on the target device and rename the file. Once renamed you can successfully restore the backup.

Explanation
This bug was created when adding the functionality that each audio file opened or Airdropped to Stage Traxx will automatically be analyzed and added as a song to the database. I forgot to do this only with audio files. It is done with every file type that Stage Traxx can open. Now this file is registered as a song and when you restore a full backup all songs (and their audio files) are deleted before restoring the backup contents. This also deletes the backup file you want to restore. Therefore the file not found error.

I will fix it right away and release another update later this week.

DickyDutch

Thanks Peter - appreciate it.