I just got an mBed board and I'm having trouble getting the J-Link to work on OS X even though I have version 4.90.
MattBookPro:gcc mbrandt$ JLinkExe SEGGER J-Link Commander V4.90b ('?' for help) Compiled Aug 14 2014 10:26:36 Can not connect to J-Link via USB.
The serial port and the disk image both show up fine, so the hardware is connected, but I can't get the debugger to connect. I also tried doing the disable_cdc script and unloading the kexts, but that had no effect.
Any ideas?