When you save and open files across a network or from removable media, many variables affect application performance. Consequently, some problems occur more frequently when you work across a network or from removable media than from a local hard disk. (Network-related problems include damaged files, denied access, or slow performance.) In these situations, Production Premium can return one of the following error messages:
- "Could not complete this operation because this file is in an unknown format."
- "Could not complete the request because the file is locked."
- "Could not save because of a disk error."
Note: Problems using Production Premium files across a network or from removable media can be intermittent or delayed.
Adobe Technical Support only supports using Adobe Premiere Pro, Adobe Premiere Elements, After Effects, Encore, Media Encoder, Prelude, or SpeedGrade on a local hard disk. It's difficult to re-create or accurately identify network- and peripheral-configuration problems.
Important: External hard drives are frequently used and should work with Project Files without a problem. Rendering video files or storing media on an external drive requires the use of fast media, found in external drives such as eSata or USB 3.0. Testing against these drives by temporarily disabling them and working exclusively on an internal drive is appropriate. However, Adobe is not stating that there should be regular problems storing files and working with external (non-portable) hard disks of sufficient speed.