I was trying to download Ubuntu on Windows installer mode. I downloaded the
Wubi.exe file and when I ran it, it said
cannot unpack c:\users\dell\downloads\Wubi.exe. What should I do?
Sometimes this happens with media on which the filed from ISO have not been burnt properly. But sometimes it is possible that media that was running properly starts giving you issues after a failed install attempt.
I had a properly working Ubuntu install CD. I tried installing it on boot but then had to power down my laptop because the freaking installer hung. The console showed me a kernel panic and I was never able to use that disc again.
Either way, you have to burn again.