I have Win 7-64 bit and it works. I did nothing, maybe I'm just lucky. ^^

But I read in another forum, that you need a file called "MSCOMCLT.OCX". Put this into winsys32 and winsysWOW and Injection Magic should work. You can get the file here: 

http://www.ocxdump.com/download-ocx-files_new.php/ocxfiles/M/MSCOMCTL.OCX/6.01.9782/download.html

I hope this will solve your problem Fabi, if not let me know.