Getting an "Invalid User Name or Serial Number " error when installing Spark

Question

I get an "Invalid User Name or Serial Number " Error when I install Spark.

Answer

This error will appear when you use one of the following characters in your "User Name" during installation:
0 1 2 3 4 5 6 7 8 9 _ # ! \ " ยง $ % & / ( ) = ?

For successfull installation, only use letters in your User Name.


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