Softdevice 7.0/7.1 hangs on sd_softdevice_enable

Question

I am using Eclipse Kepler, gcc and the nrf51 plugin ( sourceforge.net/.../) on OS X. I had an application that worked fine with SDK 5.2 and S110 Softdevice 6.0. I had been building multiple applications for months with no problems. 
 Yesterday, I tried to update to the newest software. I downloaded SDK 6.1 and Softdevice 7.0. I updated all the header files and re-worked my code to use them (like the SPI API, which heavily changed). Once I compile and try to debug, the program hangs in sd_softdevice_enable. The Eclipse debugger just jumps to this spot and never leaves, I cannot even place a breakpoint before it. See the error here:
 
 I noticed that the new Softdevice requires 88KB now, so I changed my mem.ld file accordingly. However, that did not help. I also tried to load Softdevice 7.1. Same error. 
 I am running this on an nrf51822 evaluation kit. Again, this HW and SW all worked fine with the older version of SW. I am sure this is a configuration issue somewhere, but I can't seem to find it. 
 Thoughts?

Nguyen Hoan Hoang · Accepted Answer

This is the new init sequence for SD7 
 static void ble_stack_init(void)
{
 uint32_t err_code;

 // Initialize the SoftDevice handler module.
 SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, true);

 // Enable BLE stack

 ble_enable_params_t ble_enable_params;
 memset(&ble_enable_params, 0, sizeof(ble_enable_params));
 ble_enable_params.gatts_enable_params.service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT;
 err_code = sd_ble_enable(&ble_enable_params);
 APP_ERROR_CHECK(err_code);

 // Register with the SoftDevice handler module for BLE events.
 err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
 APP_ERROR_CHECK(err_code);

 // Register with the SoftDevice handler module for BLE events.
 err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
 APP_ERROR_CHECK(err_code);
}