incompatible library version and solver version problem
 

hello
i am doing tutorial about wave tank,when i try to load libudf it gives me this error:

Opening library "libudf"...
Library "libudf.dll" opened
Error: open_udf_library: library version 6.3.28 incompatible with solver version 6.3.21
Error Object: ()

any body knows how to fix the problem?

(i downloaded files of this tutorial from fluent.com and it did not contained a header file)
thanks