I have the common the problem of "these files cannot download" I was able to fix most of the files but 3 Stood out these being Scala XML, Continuation plugin and library.
No matter what i did these always said couldnt be download even though they were.
I saw this thead
I tried the command prompt and im getting this error - -Djava.net.preferIPv4Stack' is not recognized as an internal or external command,
operable program or batch file.