I have just upgraded in the past week to 2.0.4.5 (Nov 28).
I have one job (both client and destination are Linux) that is now consistently producing this error:
2018-12-10 16:13:07 -05 - [Warning-Duplicati.Library.Main.Operation.Backup.UploadSyntheticFilelist-MissingTemporaryFilelist]: Expected there to be a temporary fileset for synthetic filelist (437, duplicati-i727580ae1aec497f9db1b8c49af17482.dindex.zip.aes), but none was found?
2018-12-10 16:27:22 -05 - [Error-Duplicati.Library.Main.Database.LocalBackupDatabase-CheckingErrorsForIssue1400]: Checking errors, related to #1400. Unexpected result count: 0, expected 1, hash: XtO8ebLb4PVQbgnJltBcPXIq0O7LnG7pxUf6qKRpxCE=, size: 102400, blocksetid: 778955, ix: 55, fullhash: ohw/DDBpIdgbR177WbcPibSOWz1fYAFfw5GaFocWMvk=, fullsize: 6111320
2018-12-10 16:27:22 -05 - [Error-Duplicati.Library.Main.Database.LocalBackupDatabase-FoundIssue1400Error]: Found block with ID 22260331 and hash XtO8ebLb4PVQbgnJltBcPXIq0O7LnG7pxUf6qKRpxCE= and size 56200
2018-12-10 16:27:22 -05 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /home/david/.config/Duplicati/XBNJRIILMI.sqlite-journal
System.Exception: Unexpected result count: 0, expected 1, check log for more messages
at Duplicati.Library.Main.Database.LocalBackupDatabase.AddBlockset (System.String filehash, System.Int64 size, System.Int32 blocksize, System.Collections.Generic.IEnumerable`1[T] hashes, System.Collections.Generic.IEnumerable`1[T] blocklistHashes, System.Int64& blocksetid, System.Data.IDbTransaction transaction) [0x002fb] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
at Duplicati.Library.Main.Operation.Backup.BackupDatabase+<>c__DisplayClass13_0.<AddBlocksetAsync>b__0 () [0x00000] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
at Duplicati.Library.Main.Operation.Common.SingleRunner+<>c__DisplayClass4_0`1[T].<RunOnMain>b__0 () [0x00000] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
at Duplicati.Library.Main.Operation.Common.SingleRunner+<DoRunOnMain>d__2`1[T].MoveNext () [0x000b0] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
--- End of stack trace from previous location where exception was thrown ---
at Duplicati.Library.Main.Operation.Backup.StreamBlockSplitter+<>c__DisplayClass2_0+<<Run>b__0>d.MoveNext () [0x00a24] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
--- End of stack trace from previous location where exception was thrown ---
at Duplicati.Library.Main.Operation.Backup.StreamBlock+<ProcessStream>d__5.MoveNext () [0x0012c] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
--- End of stack trace from previous location where exception was thrown ---
at Duplicati.Library.Main.Operation.Backup.FileBlockProcessor+<>c__DisplayClass1_0+<<Run>b__0>d.MoveNext () [0x002b3] in <c6c6871f516b48f59d88f9d731c3ea4d>:0
However, the backup itself reports as successful.
Countermeasures?