The File Delete Error dialog appears when an attempt to delete a file results in an error. It shows the error and the file which produced the error.
File
Delete Error Dialog
If the error is a result of the file having the read only attribute set, it may be deleted by pushing either the Del R/O or the Del All R/O pushbuttons. The latter button will cause all subsequent files marked with the read only attribute to be deleted without an error in the current delete task.
If the error is caused by an error other than having the read only attributes set, the only options are to Skip or Cancel the operation.