SN's for Ragtime 4.x, - (4.0 through 4.2) are:

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SN 1:
3CCB01 3E5E63 8578E5 E2747C 1B9E0B E3CA

SN 2:
8D2B01 154AC9 452A45 A8D82A 308AA1 26F0

Enter the serial exactly as shown above with the spaces, - no dashes.