itunes not adding folder to library error occured 1001
When trying to add a folder to I tunes I get the usual converting wma to aac message, when I click convert I get a message box stating an unknown error occurred (1001) at the bottom left hand corner it says + 10 total errors, when I click on the + it shows 1 unknown error occurred (1001) and 9 unknown error occurred (-54). This same folder used to be on my iTunes but took it off at some point. The problem has only started since upgrading windows to Windows 10. Can someone help me resolve this issue.
The folder is an album I downloaded on to my pc direct from official cd
iPhone 5c, null