Hi @SWIM, welcome to the community.
As mentioned in another topic on the forum here, there is a problem with the 2104 SD Image and @jofemodo is now working to correct the error. It should be corrected in a couple of hours and ready for download.
The stable SD-image should be fixed now. Please download and test.
thank you so much for your quick and detailed responses. so far the os is working perfectly with the zynscreen and pots. now to test the audio and midi. will post updates soon.