Have downloaded old submissions as a zip file, but I'm unable to extract

 - "the compressed (zipped) folder is invalid"

I think this issue is only present when you're trying to extract the zip file with the Windows default un-zip program. 

I can see reports from other users with the same issue, I will report this issue to our second level, but here are some programs to un-zip that you can download, they are working fine. 

http://www.winzip.com/win/en/index.htmÇ 

http://www.7-zip.org/ 

http://www.win-rar.com/ 

I just tested with Winrar and it is working fine: 

Please in the meantime un-zip your file with one of the programs given above, we will let you know when this is resolved. 

Didn't think to try another program - opened fine with 7-zip.

Thank you.

Tom

Glad to know it worked wit 7-zip; however, I will leave the ticket opened and our developers will resolve the current issue with the Windows default un-zip program so there will not be need to download another one.