Unzip Plugin error

I am not sure if this is a legitimate error but it seems like it might be because the unzipped stopped in the middle of the zip file. It is a minor issue with the error message:

Error: |o space left on device

The install progress panel was left with the cancel button enabled. If it really was out of space, the plugin should have reported with an 'n' or 'N' instead of the vertical bar.

I have since discovered the install was on a virtual machine with very little disk space. So the error is most likely legitimate. I won't ever find out for sure since the tester is having the image restored to a previous snapshot.