Hi Roberto,
Glad you succeeded - I recognize the tool learning takes time, we all had problems with that. One tip I can give you about the stack - you can estimate the amount needed by generating a listing for each file in the project - each list file (although somewhat hard to read) calculates and writes the stack frame depth for each function - and knowing how your codes operates you can calculate the total stack amount and then take a decision about the size. Of coarse, a real testing is needed, but at least you can start with an estimate rather than guessing with defaults.
Regards,
Petrei