Is that the TBS or the default?
It means that 0 arguments are given when there should be 4 (or maybe the other way around). I am guessing that the TBS is overwriting a window that is created at that line, and so it is calling the wrong window. Look at it, it should be something like Window_XXXXXX, and see if it is overwritten by the TBS. If it is, it likely means that it is calling that window, which requires 4 arguments, when it should be calling the default one. Again, it can be fixed by renaming the class, but make sure you find all instances that that window is created and change the call appropriately