when I open the Edit List dialog of the ProcessLog operator, I can add values without problems, but when closing the dialog, it forgets everything I entered. Changing existing entries seems to work. Also, when I edit the xml file directly, the entries I entered show up in the dialog correctly.
I am using RapidMiner-4.4 community edition with java 1.6 on linux.
I have to apologize, I just did not know that I have to enter a name for each entry. When I do not leave the first column blank, everything is fine. Perhaps a warning should be displayed instead of discarding all entries without a name.
If it makes you feel any better, Rasputin, I've been using RM for over a year, and still make that same mistake of leaving the first column ("log") blank more often that I should probably admit.
A warning message here would have saved me from myself on multiple occasions. Another possibility would be for RM to put in initial default values something like "log_value_1", "log_value_2" in that column when a clicking "Add" in the parameter list.