Maybe I'm being ignorant about the matter but when I try to unzip the file using the correct software provided from the link above, it gives me an error saying that it "cannot open output file." I'm extremely new to Construct and just found out what a 7z file was today so any help would be appreciated.
@elNighthawk: Maybe the 7z file was corrupted in which case you might want to try and download it again. Also, where do you try to unzip it ? Perhaps you don't have the rights to create new files in the very folder you're trying to unzip the archive.