cant copy anything to nexus

[leo5111]

its a verizon wireless lte version it just started happening i try to copy anything to it, it says device is not responding or has been disconnected but i can delete things on it from the window in windows? :'(

 

[Cyber Warrior]

Try rebooting your computer and phone then connecting again.

 

[clicq0]

If that doesn't help, you've probably been bitten by this bug:
Issue 23090 - android - Galaxy Nexus MTP Support Can Hang Transferring Files - Android - An Open Handset Alliance Project - Google Project Hosting

You can try using a number of wifi programs to transfer your files or use ADB. Or flash a ROM with 4.04.