Hi Tyrone,
Thank you for your feedback.
All that needs to be done is that you need to add the following lines into your code:
const u32 wm_apmIRQLowLevelStackSize = 1024;
const u32 wm_apmIRQHighLevelStackSize = 1024;
In my understanding, since around 6.31 openAT release one have to define these stack sizes via “Code generation parameters” form, which will generate “generated.c” 
defining these parameters:
For example mine generated.c contains:
// Application version definition
const ascii adl_InitApplicationVersion = “2.01”;
// Low level handlers execution context call stack size
const u32 adl_InitIRQLowLevelStackSize = 1024;
// High level handlers execution context call stack size
const u32 adl_InitIRQHighLevelStackSize = 1024;
// Application tasks prototypes
extern void mainTask ( void );
// Application tasks declaration table
const adl_InitTasks_t adl_InitTasks =
{
{ mainTask, 24576, “mainTask”, 1 },
{ 0, 0, 0, 0 }
};
The bad thing with this generated.c that it sometimes regenerated and losts the previously entered parameters - see The Task Table becomes empty when changing Memory Type.
Maybe that was the reason of my problem with ethernet.
Kind regards,
Maxim.