The Marvin JS license file is most probably provided in a separate license file than the  Compound Registration license file.

  • Using the latest Compound Registration version: using the installer wizard both files can be uploaded and the system will automatically merge the two licenses. No "Valid license cannot be found" message should be received in this case.
  • Using  C ompound Registration versions older than 17.06.12:  the content of the MarvinJS license should be copied into the same license.cxl file that is used for Compound Registration.