I loaded up pca10056e ble_app_beacon example for SES to test it on a custom nrf52811 device I have built (using BMD-360 module).
I followed the instructions here and removed the appropriate preprocessor symbols, then loaded it onto the board.
Using some breakpoints in debug mode I can see that it will run up until the ble_stack_init() function is called in main, where it presumably has an error and enters an infinite loop.
I'm not sure what's wrong, since it will run fine on the nrf52840 DK.