Solved a bug: got the last part of the namespace as the prefix, nhot the firt one.

include/iri_nav_module/ackermann_lp_module_bt.h

@@ -109,7 +109,7 @@ class CAckermannLPModuleBT
     module(module)
   {
     std::size_t found = name.find_last_of("/\\");
-    this->name=name.substr(0,found);
+    this->name=name.substr(found+1);
   }
 
   template <class ModuleCfg>