iMac crashes occasionally when plugging in USB

#1

I’m running OSX 10.9.x . Trying to connect mBot. I don’t see Bluetooth availability. When I do connect USB, it works, but occasionally crashes my computer - dark gray screen and I have to reboot. I’m careful to unplug battery power, turn off the mBot, before plugging in the USB.
I will try to restore. I’ve had success with following a line, and using buttons.
Surprised at the battery consumption.
I would like to run the motors for a set period, but I can’t figure out the code in mBlock.
Any help appreciated.
R

#2

@robertstagg, for the occasionally crashes, we have no idea, is it possible caused by the antivirus in your Mac? Please have a check, as we assume, the problem shouldnt caused by USB plugging.
what kind of code you need for motors, could you please specify? you can send email to us by
support@makeblock.cc

#3

I have the same issue on my iMac running OS X Yosemite 10.10.5.

Every other time I connect the mBot via USB the iMac crashes and has to reboot.

any help is more than welcome

#4

I had the same problem with a Mac Mini using Yosemite or El Capitan. I have loaded the signed USB driver and removed the drivers that didn’t work. After that I haven’t had a crash in a while. Crossed fingers and all that…_

#5