The message "Event Log Read Failure" (Id 12524) indicates that the event log files cannot be found. These files are separate from the project file (the .vop
file). If the files have been moved or separated from the rest of the project folder, this error will occur.
An Observer XT project is a folder named after your project, which contains:
.vop
fileNote: Windows may hide file extensions (e.g. .vop
), and older versions of Observer may not display Restore.btn
files.
Crucially, observational data is stored in the Event Data folder, not in the .vop
file. Each observation has its own file in this folder. If the .vop
file is moved outside the project folder, Observer may recreate the folder structure but will be unable to locate the original data files—triggering the read failure.
To move a project between folders or computers:
.vop
file and all subfolders..vpb
file. Move this file and use File > Restore Project on the new computer.The following project components must have matching names:
.vop
project file.pos
fileIf file names are changed and no longer match, especially after restoring from backup or renaming manually, you may encounter read errors or failure to open observations.