Hello gingerlovesbacon,

Please try to download full installation package from here:
http://free.avg.com/ww-en/download.prd-afh

Download x86 or x64 package depending on your operating system.

If the package still fails to extract, try to extract it manually(e.g. with 7-zip) and then run following binaries:

vc_red.msi
COREx86.msi or COREx64.msi
AVGx86.msi or AVGx64.msi

Should there be any more issues, please try to check your harddrive for errors and provide us with installation log files.

Upload requested files to some online storage service and provide us with link.

Thank you