IDE installtion errors

When installing the IDE there are many "Unable to open *.DLL", errors. I check ignore errors and the IDE installed. Now when selecting the correct port and board and uploading blink, several ATK 500 errors result. I have uninstalled and reinstalled the IDE several time, with repeated results.

Thanks in advance.

Please post the full text of any and all error messages. You should do this whenever asking a technical question.