Just click on export and select the layer stackup report check box, text option. I also check for gerbers, dxf and various other reports as well.
This is a 6 layer design, with the standard silkscreen and solder/paste masks.
The board statistics text report looks fine.
Here is another try in which part of some layer info made it into the report, then no more:
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Ultiboard Information Export File
Design Name : Power Dist Board-1082-0_01 - Layer stack-up
Report Date : 21 March 2016
Report Time : 14:00
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Copper Top
Signal
T