I suppose you have problems with the permissions to read and/or write either with the drive where the original file resists or on the drive where you want to copy to.
Try to save the package on a different place.
But you should answer the questions as it could be also a compatibility problem.
1. Windows 10
2. CC 2015
3. Local drive
No problems with 5 other documents located in the same folder.
Ran updates, tried saving to a different location - success! Thanks for your help.