The following can be observed in the output log for the various BuiltData.uassets:
Cmd: OBJ SAVEPACKAGE PACKAGE="/Game/Maps/Highrise_Audio_BuiltData" FILE="../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset" SILENT=true LogSavePackage: Save=1.42ms LogSavePackage: Moving '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Saved/Highrise_Audio_BuiltData92274ABC41CAFBE251932382F832725C.tmp' to '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset' LogFileManager: Warning: DeleteFile was unable to delete '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset', retrying in .5s... LogFileManager: Error: Error deleting file '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset'. LogSavePackage: Error: Error saving '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset' LogSavePackage: Display: Finished SavePackage ../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset EditorErrors: New page: Save Output EditorErrors: Warning: Error saving '../../../../../Builds/Release-4.17/Samples/Games/ShooterGame 4.17/Content/Maps/Highrise_Audio_BuiltData.uasset' LogSavePackage: Save=640.07ms
Repro:
Result:
Pop up messages for various *_BuiltData.uasset fail to save. Standalone window opens after skipping all of them.
Expected:
All of the various BuiltData.uassets successfully save.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47068 in the post.