ID:210050 Can't support remote update difference file with file extension <name>

CAUSE: You manually edited a Conversion Setup File (.cof) to create a remote update difference file with the specified file extension. However, the Quartus Prime software supports only difference files with .jam, .jbc, and .hexout file extensions.

ACTION: Click OK to close the message dialog box. Change the extension used when creating remote update difference files to .jam, .jbc, or .hexout.