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Can not show data
I am running into some kind of strange problem here. When my mouse focuses on the input or ouput point, the RapidMiner can show a window filled with information. This window of ReadExcel operator for excample, can show my data table have 1000 examples, 80 attributes, and other information, but the specific data which should be showed below is always missing, I can not see the table of part of my data.
This happens several times, but sometimes it can show specific data. I don't know why, call for help!