Debian x86_64 cryptomator upgrade of volumes from 1.4.15 to 1.6.14 - Cannot open files

Please agree to the following

Summary

Hi guys, I don’t want to panic, but I am a bit stressed atm as I depend on you. After performing a volume migration, I can’t open my cryptomator encrypted files after upgrading volumes for latest version.

What software is involved?

  • Operating System: Linux dka 5.8.0-0.bpo.2-amd64 #1 SMP Debian 5.8.10-1~bpo10+1 (2020-09-26) x86_64 GNU/Linux
  • Cryptomator: 1.6.14-x86_64
  • Previous Cryptomator version: 1.4.15

Volume Type

FUSE

Steps to Reproduce

  1. Have a volume with 1.4.15
  2. Launch cryptomator with 1.6.14
  3. Open volume, it will ask to migrate
  4. File can be seen but not read

Expected Behavior

  • File should not be lost after migration and can be read

Actual Behavior

  • File can’t be read after migration
  • I can copy them on another drive
  • I can see the file is not corrupted , it have size, I can see preview for photos
  • it’s just it doesn’t open with any software
  • When trying to open volume with 1.4.15 I have the message : Unsupported vault. This vault has been created with a newer version of cryptomator

Reproducibility

Always

Relevant Log Output

09:19:40.006 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/0 from version 6 to version 7.
09:19:40.258 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.929F9584.bkup.
09:19:41.100 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Underlying file system meets filename length requirements.
09:19:41.401 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Starting migration of 1474 files

// lots of copy (after 1 drive out of 3)

09:19:45.503 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Updated masterkey.
09:19:45.572 [App Background Thread 002] INFO  o.c.c.migration.v7.Version7Migrator - Upgraded /media/dka/T5 2TO/vlt/0 from version 6 to version 7.
09:20:04.161 [App Background Thread 003] INFO  o.c.c.migration.v8.Version8Migrator - Upgrading /media/dka/T5 2TO/vlt/0 from version 7 to version 8.
09:20:04.450 [App Background Thread 003] INFO  o.c.c.migration.v8.Version8Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.3FB44745.bkup.
09:20:04.562 [App Background Thread 003] INFO  o.c.c.migration.v8.Version8Migrator - Wrote vault config to /media/dka/T5 2TO/vlt/0/vault.cryptomator.
09:20:04.838 [App Background Thread 003] INFO  o.c.c.migration.v8.Version8Migrator - Updated masterkey.
09:20:04.839 [App Background Thread 003] INFO  o.c.c.migration.v8.Version8Migrator - Upgraded /media/dka/T5 2TO/vlt/0 from version 7 to version 8.
09:20:25.575 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:20:32.512 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:20:36.776 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:20:38.841 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:20:46.653 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:21:03.689 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/1 from version 6 to version 7.
09:21:03.908 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.B3349EEC.bkup.
09:21:04.778 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Underlying file system meets filename length requirements.
09:21:05.845 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Starting migration of 7443 files


// lots of copy (after 3 drive out of 3)

09:21:10.075 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Updated masterkey.
09:21:10.075 [App Background Thread 006] INFO  o.c.c.migration.v7.Version7Migrator - Upgraded /media/dka/T5 2TO/vlt/1 from version 6 to version 7.
09:21:11.877 [App Background Thread 006] INFO  o.c.c.migration.v8.Version8Migrator - Upgrading /media/dka/T5 2TO/vlt/1 from version 7 to version 8.
09:21:12.190 [App Background Thread 006] INFO  o.c.c.migration.v8.Version8Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.82E67658.bkup.
09:21:12.298 [App Background Thread 006] INFO  o.c.c.migration.v8.Version8Migrator - Wrote vault config to /media/dka/T5 2TO/vlt/1/vault.cryptomator.
09:21:12.611 [App Background Thread 006] INFO  o.c.c.migration.v8.Version8Migrator - Updated masterkey.
09:21:12.611 [App Background Thread 006] INFO  o.c.c.migration.v8.Version8Migrator - Upgraded /media/dka/T5 2TO/vlt/1 from version 7 to version 8.
09:21:26.584 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:21:26.796 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.0101136B.bkup.
09:21:27.654 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Underlying file system meets filename length requirements.
09:21:27.665 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Starting migration of 0 files
09:21:27.979 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Updated masterkey.
09:21:27.979 [App Background Thread 005] INFO  o.c.c.migration.v7.Version7Migrator - Upgraded /media/dka/T5 2TO/vlt/2 from version 6 to version 7.
09:21:29.101 [App Background Thread 005] INFO  o.c.c.migration.v8.Version8Migrator - Upgrading /media/dka/T5 2TO/vlt/2 from version 7 to version 8.
09:21:29.410 [App Background Thread 005] INFO  o.c.c.migration.v8.Version8Migrator - Backed up masterkey from masterkey.cryptomator to masterkey.cryptomator.0F932C39.bkup.
09:21:29.518 [App Background Thread 005] INFO  o.c.c.migration.v8.Version8Migrator - Wrote vault config to /media/dka/T5 2TO/vlt/2/vault.cryptomator.
09:21:29.819 [App Background Thread 005] INFO  o.c.c.migration.v8.Version8Migrator - Updated masterkey.
09:21:29.819 [App Background Thread 005] INFO  o.c.c.migration.v8.Version8Migrator - Upgraded /media/dka/T5 2TO/vlt/2 from version 7 to version 8.

Anything else?

I don’t think it is unaccessible, as files are still here with their size, but me alone I can’t do anything to recover it.
I depend on you on that one, is it totally impossible to revert the volume migration?