One other thing to check. Go back to the File manager. Long press on it to get the popup menu and then select Info. Check and see what the file size is. The free FRM looks like it's 60kb on my phone. Yours should be somewhere near that size.
There's your problem. That file is definitely not correct. Go ahead and delete that and try re-downloading it. Check the file size when it's done because it should definitely be much larger than that.
Sounds like it. Looks like the Team Defuse (Fission) website is down again right now. I was going to try downloading it from there and see if it was working but am not able to get the pages to load. Maybe try downloading it again later.
Of course now the page loads. There website has issues. The "Lite" version download works just fine. Try downloading the Lite version and see what happens.
*Edit* Looks like Angdroid just tweeted that the site was back up a couple seconds ago. Must have been doing some maintenance on it. Good to see he's alive and tweeting also.