We just released Horizon v2.5.1. This update addresses mostly every compatibility issue including Windows 8 and hznasm.exe errors.
Download it here:
XboxMB - Xbox Message Boards - Horizon
Resident Evil 6 and Forza Horizon tools were also added yesterday!
Please leave feedback!
Yes! Finally the hundreds of threads will stop rolling in!
Thanks Cheater!
Seems to be working fine as well, haven’t noticed any bugs so far.
Awesome. =]
YES OH GOD YES
I see it has a setup now.
Very nice job once again Cheater.
Forza Horizon tool? That game isn’t out yet? Wat.
You god! < 3 xxxx
Amazing Cheater, I like the fact that now we have to install I thought that would be nice add on and I hope everyone will enjoy this. 
Well back to modding!
Sweet 
When is the next beta coming?
This is epic by the way.
Haven’t used Horizon in so long I forgot what it looked like.
I can confirm that windows 8 is working with Horizon
Good release.
I guess cheater912 woke up on the good side of the cover this morning.
I’m getting this when starting up the Setup. Just in case you want to know
@sgt Frankieboy
Turn off windows smart screen
Press the windows button, type smart screen, select settings and select change smart screen settings.
Turn it off
I did also, nothing to worry about. Click More Info and click Run.
I know I can turn it off. I just wanted to let Cheater know so he could make sure that it isn’t unknown.
I know there is nothing to worry about 
I’ll download it later and see if it works
horizon tool in horizon. lol
hope mine updates
There’s nothing we can do about the SmartScreen filter until Microsoft adds our certificate to the trust list. That will happen in time.
I’m surprise they even pass you during windows 7 and stuff lol.
Jk
Thanks for the update DUDE!
Not to be picky forza horizon is in the wrong place 
