When the Models are Not Positioned Correctly on the Screen
you can try this:
Quit iStripper
go to your Data folder which by default can be found here:
%LOCALAPPDATA%\vghd\Data

then in the data folder find the file named entrances.dat
delete that file.
it is the stored location of where the Models were Last positioned on the Screen.

restart iStripper
Now the Models will create a New Position In stead of using one of the Stored Positions from the existing entrances.dat file.