Mediafire has decided that all 7z files are verboten. I've replaced the link with a Dropbox link for now, but depending on traffic that might not take.
I'll figure out a more permanent fix later on.
Other progress: Got VX save files to load. Started redoing some backend infrastructure of RPGMaker Trans to support VX games.
Update: I've had an email from Mediafires customer support crew- it seems that now there is a limit for the number of downloads that any free hosted file can have. So, that means that Mediafire has just gone from a good file host to probably one of the worst. Also explains why so many other Mediafire links have died recently...