The Winplan 32bit client requires a config2.txt file. This file contain the hconfig settings from the game and is used by the client to calculate the next predictions for planets and startbase screens.
Up to V3.6.0.44 you will get a error: "Error in Planetstats > Description is:53; file not found" when this file is not present. You need to supply the config2.txt file for the error to go away
From V3.6.0.45 on you will not receive the error if the file is missing. The client will use defaults to calculate the predictions and warn you that defaults are used. You can find details of what changed in V3.6.0.45 here.
Here is a example config2.txt file. You can use this for default settings config2