nRF51 IoT SDK only support KEIL MDK4?

[Paul]

I just downloaded the IoT SDK, found that they are KEIL MDK4 projects. When will the MDK5 softpack be available?

[Paul]

Thank you Stian.

[robomotic]

I am in the same situation and despite the same error I got the firmware compiled and flashed: Program Size: Code=20580 RO-data=432 RW-data=228 ZI-data=8524
FromELF: creating hex file... "._build\nrf51422_xxac_s1xx_iot.axf" - 0 Error(s), 0 Warning(s).

I observe now a blinking led and I can see now an nCOAP_client advertising with 1820 but no characteristics inside. Not sure if it's working though, will have to setup a raspberry pi and do the IPV6 test. Will let you know asap.