Euhm first of all on the site you have posted download windows version from above link but there is no link where a precompiled version can be downloaded
Second i won from windows 8 at last with bfgminer and it is now working with both types of usb miners.
The solution had todo with the installed usb drivers, that if you ever had installed zadig you need to delete all drivers which point to winusb
To do this without getting problems you need to remove all usb devices if possible
Internal devices such as hubs will reinstall themselfs
Now on itself it sounds simple but it can be a pain to get them out if you need usb for keyboard/mouse
I also found out that windows simply reinstalls them if you did not disconnect the devices from the usb ports, or that if reconnected it finds the old installed drivers which causes this issue in the first place.
So after i checked with USBDeview and saw not one of them had the zadig drivers anymore
I took the next step and installed the silicon labs CP21x drivers again.
Then started multiminer and choose bfgminer
On the options commands inserted the new bfgminer command -S erupter:all and turned off gpu mining
Then i choose safe and start
And poof it is working
This does not mean there are no issues with running cgminer and bfgminer under windows 8.
I am missing an option to choose between the following options with multiple pools
For instance which pool to mine at.
And maybe a choice to either choose balanced, failover-only and so on, ofcourse if this gets implemented you need to add some way to select which pools it has to use. I see people mining at over 5 pools at once.