I'm getting bitten by this as well. The earliest version of the S212 SoftDevice that I'm finding is 2.0.1, and it seems like this is a problem? Would just like to get back to the original configuration of the D52 Starter Kit / Network Processor to do some RSSi measurements.
I checked, and the 8.5.0 Pack is selected when I'm building.
Thanks!
-Tim