Hi. I have a problem with Wasp Engineering, or Assesment tool. I have a Wasp Engineering project. And i want to use wasp assesment tool. I have a height, wind, turbine site for assesment tool. Everything is okey. When i click the button, which says prepare data for WAT, it asks me vector data, generalized wind climate file and generator, right ? But, there is a problem. I cant use my *gwc or *lib files. I open my Wasp project, (not engineering), right click on (IBZ Generalized wind climate), and export ; When i try to export my generalized wind climate to *lib file, it says "continue, use the choosen format and lose meta-data" and its really losing ! When i open the file which i exported, there is no temperature, pressure informatiions, and this is very interesting, the location is changes ! For example, lets assume that in Wasp project my location is 56,11.. N and 11,46..E But It is 11,46..N and 56,11 E in exported *lib file ..... When i try to export my generalized w.c to *gwc file, yes i can export but in Wasp engineering-prepare data for WAT, There is an error.. I cant launch the WAT with gwc file.The Error is : A problem occurred before the calculations were completed because ... failed to initialise wasp project because ... could not insert a Generalised wind climate to the hierarchy because ... could not restore a wind atlas from file because ... could not load a wind atlas from file because ... could not load a wind climate from a string of XML because ... the system reported that: 'Invalid use of Null.' I also tried to use ParqueFicticio's wasp project for generalized wind climate. Also in this project, when i export generalized wind climate to *gwc data, there is an error like above in prepare data for wat. But i can use Denmark or Waspdale.gwc (in Wasp-misc files) So, is there a problem with the way which i prepare *gwc or*lib files? I done everything like in help files, wasp and wasp enginnering...