I have no idea, but all of a sudden it just does not work anymore. I draw a rectangle, then I type in measurements, e.g. 14",48" and hit enter. And then nothing happens. Just... nothing.
To make sure I do that right here in great detail what I am doing:
I left click the "Rectangle Button"
I left click the starting point.
I left click the end point.
Using the number keys on my keyboard I type 14",48"
then I hit enter
Then I let out an increasingly frustrated grunt.
My bloodpressure then slightly rises.
Rinse and Repeat.