Missing Files
If you open a project and one or more files are missing, the Resolve Missing Files dialog opens. If you click Close, the project opens without the missing files.
In the Pool, you can check which files are considered missing. This is indicated by a question mark in the Status column.
A file is considered missing under one of the following conditions:
The file has been moved or renamed outside the program since you last worked with the project, and you ignored the Resolve Missing Files dialog when you opened the project for the current session.
You have moved or renamed the file outside the program during the current session.
You have moved or renamed the folder that contains the missing files.