What I suggest you do first of is run a full virus scan, this will quickly tell you if theres a virus or not, if so, it will isolate the file, and you can then pinpoint where it's coming from.
Now, as already stated it's most likely not a virus embedded in fh+ itself, but most likely an outside virus that has infected a fh+ file.
So, run a virus scan first, and if you dont know how, get someone to help you out ^^