better handling of ethercat ADC load warnings

this is a very nice approach, to be
replicated into all other try - catch based
loading

code/classes/SCDclass_taskmdsloadprevETHCAT.m

@@ -44,9 +44,8 @@ classdef SCDclass_taskmdsloadprevETHCAT < SCDclass_task
                     case 2
                         obj.actualizeNode(shot); 
                 end
-            catch
-                fprintf('\n');
-                warning('SCDclass_taskmdsloadprevETHCAT:init','Error initializing ETHCAT bus for node %d.',obj.node);
+            catch ME
+                warning('SCDclass_taskmdsloadprevETHCAT:init','Error initializing ETHCAT bus for node %d. Error is:\n%s',obj.node,getReport(ME));
             end
         end