I had emailed contact support at 4shared.com. She had me email her the links that weren't working. I don't know if she did anything about it because her email reply back to me said this:
Thank you for letting us know! I have tried to open the links on my end and they
work fine for me. Most probably, the issue was caused by a temporary
connection problem which has been already resolved. Please try to download the files again.
It looks like according to some of your responses that it seems to be working better now. So sorry!!! Have a great day!