SDK v1.3.1 Segger won't build samples or applications

[Maplesoup]

I've just moved over to the latest SDK version 1.3.1 (i uninstalled the previous version before installing the new one)

I installed it via the toolchain manager as usual.

SEGGER can no longer build Samples or Applications, 

I just get this error when opening the project using the "Open nrf connect sdk project...." 

I've managed to build the Asset tracker once but if I try to open the project using the "Clean Build Directory" option I also get this error.

Any ideas would be great.

[Maplesoup]

That doesn't seem to of changed anything unfortunately. 

I cleaned out the build folder for asset_tracker as well, still the same issues.

[Amanda Hsieh]

Please set ZEPHYR_TOOLCHAIN_VARIANT as gnuarmemb in the environment variables. 

-Amanda H.