Seek statements are carried out directly to disk. This error has the following causes and solutions:
Remove the write-protected attribute or change the read-only attribute or lock. Note that if the file is locked by another process, you can't remove the lock.
If the file has been moved to another disk, access it from there. Otherwise, you can't access the file.
Obtain a new copy of the library or project file.
For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).