Extracting/Unzipping Gamecube ROM's

Hello people,

Before I get into my problem I would firstly like to say I am familiar with the process of downloading/extracting ROMS as iv done it before plenty of times in the past, even from Vimms Lair.

But I haven't done it for a while and now I'm having an issue, Once I download the file from my browser, I use 7-zip/WinRaR to extract the file as you do. (in the past it has always created a folder with the same name as the zip file and inside the folder is a "vimms lair.txt" text doc and normally the .iso file which can only be opened from inside the emulator)

But now inside the folder is the "vimms lair.txt" text doc and another zip file? and that file cant be extracted or opened. Tried re-downloading/re-extracting etc but nothings seems to work.

After some testing with Playstation/Gameboy and Nintendo ROM's they seem to extract normally as I described above, this appears to only be an issue with GameCube ROMS. Not sure if anyone else is having similar issues or is able to help at all.

Thanks