I'm also slightly angry with this issue!
I have used Artist Edition 3 for a while and have had no issues. Decided to buy the 4 upgrade and the first computer I installed it on it just hangs when it's loading sound files. Have completely uninstalled it and reinstalled 4 from scratch and same issue...same place! (Windows 7 Pro with AMD FX 4100 3.6 GHz Quad-Core Desktop CPU Processor AM3+, 12GB RAM, primary drive is SSD and secondary drive is SATA, Onboard Realtek sound card and PCIe Sound Blaster Audigy, etc).
I tried loading it on my other HP Desktop withWindows 7 Home and an i5 3.4GHz, 8GB RAM, same SSD/SATA config and onboard sound card...this one I am highly upset with! It crashed my system as soon as I tried to run it! I mean hard crashed so bad I couldn't even use the restore partition to recover my computer! Having to ostart from scratch and I lost many songs I was working on, ideas I was putting down in GuitarPro and many complete masters of songs that I had finished!!!
I also have it on my MacBook also with an i5 and 8GB RAM and it runs...but as soon as you try and insert a track, crashes!
Needless to say, I put in a ticket wanting my money back for the purchase! That won't cover all my losses...but will leave me as one very unsatisfied customer!
I love the AudioBox I bought that came with the original copy of Studio One 3...and version 3 worked fine!
Don't do 4!!!