DAS Smart Calculator problem: enter wrong code number (solved)

I bought this DAS smart calculator from chinaobd2.com for some days, when I use 2014.12 software, it always appeared the error message: The entered code number is incorrect.

I have searched on the net and forum for solution but nothing found, finally I asked chinaobd2 engineer for help, they offer me the solution, it work fine then, I would like to share with you, hope to help you.

Solution:

If the DAS is after 2013, you should Copy the [csdsmart.dll] file to F:\Programme\DAS\smar

Download [csdsmart.dll] in the following link:

https://mega.nz/#!SQ92kLCY!1RbSH0ml5hyjZxUIvTL2pBt4s8BgnRa6OBphhS564yE