Thanks for all you help so far but after doing everything I am still experiencing the same issues.
1. Removed the extension.
2. Restart the computer
3. Reinstall the extension
4. Did all the reset and delete Maccache file
5. Replace license file with new one you sent.
6. Open DW, Data Extender downloads and install.
7. Asked for lic key, put it in and got Error 43 again.