Something is wrong. when i connect ez-b to computer it gives me two ports COM3 and COM4. But on tutorial video shown COM3 and COM7. I connect to COM3 as it is shown in video. When i try to open examples botton it does not give same window as shown in video. (picture attached) In this window i cannot open calibration example project. It just not there. If i just go to Add-servo-modified servo Movement Panel and start to modify servos it works (sometimes) or led on ez-b and bluetooth turns of and servos start shaking. sometimes one arm goes up in the air,sometimes head while leds are off. and it goes up or down not smooth, it shaking, like moving mm by mm and i have to disconnect all servo leads from ez-b to stop them shaking. if i just reconect power it keeps shaking. what is going on?!