I had an email exchange with Sebastian Brosch at Segger where he explained that SES version 5.42a is NOT a down-rev version of the IDE. In fact, it's an independent fork. In other words, it's a separate product developed and supported by Nordic. At Segger they call it the Nordic Embedded Studio or NES and they DO NOT support it.
So to the Nordic support engineers, please don't tell people to look to Segger for support of the Nordic version of SES (the NES).
I think it would also be wise to move the NES installer to the Nordic website so people don't confuse it with a Segger product.