In the process of setting up a windows 8 vm on Parallels I installed V490a and it did not work for me.
V488b did work.
If you run "J-Link commander" it should find the OpenSDA device.
See also for other things you may have to do:
SEGGER J-Link Commander V4.88b ('?' for help) Compiled Jul 21 2014 16:17:04 DLL version V4.88b, compiled Jul 21 2014 16:16:56 Firmware: J-Link OpenSDA 2 compiled Apr 24 2014 14:44:11 Hardware: V1.00 S/N: 621000000 VTarget = 3.300V Info: Found SWD-DP with ID 0x2BA01477 Info: Found Cortex-M4 r0p1, Little endian. Info: FPUnit: 6 code (BP) slots and 2 literal slots Info: TPIU fitted. Info: ETM fitted. Info: ETB present. Info: CSTF present. Found 1 JTAG device, Total IRLen = 4: Cortex-M4 identified. Target interface speed: 100 kHz J-Link>