how to use acrobat sdk develop adobe reader plugins?

I have developed a plugin of Adobe Acrobat DC, but when I put it on Adobe Acrobat Reader DC the reader show me a error:

"Invalid plugin detected. Adobe Acrobat Reader DC will quit."

And the software quit.

I want to know the cause of the error.

I used the Acrobat DC SDK developed the plugins and the develop center instructions "Develop software that integrates with Adobe Acrobat and Adobe Reader.". I have put the .api in the correct position.

Thank you for your answer.