can't install ANY rom. Help! topic

So I was having some issues with feedback during calls with almost all custom ROMS. I reverted back to the gingerbread stock rom via odin to see if it was just a ROM problem and I found the source of the initial problem. But now when I boot into the recovery, it won't flash any new ROM I want to go back to. I do the normal flash/wipe + the cache for good measure, and apply the zip and It'll say "Short write of /tmp/sideload/package.zip (no space left on the device)." But I have 4gb free on my phone so i'm definitely not out of space. I've tried the AOKP JB rom, shoshock, and the newest cyanogen mod. No luck on any of them.

What am I doing wrong?