Normis as you can see ROS package is "fixed". "Fixed", because now i see dude package on the list of packages, but dude doesn't work on 6.20.The Dude package must be fixed, not RouterOS. And as you know, Dude has not seen updates in some while.
Normis, look at 6. 20 changelog:Nothing has changed. Dude package is not fixed and is not available.
What's new in 6.20 (2014-Oct-01 10:06):
*) fixed problem - it was not possible to see & uninstall dude package;