Chart window dont open properly?

Have you tried to resize the window using the Desktop handles? Vassal remembers the size of windows from one invocation to the next. This is stored in the modules preference file. If your module is called Foo Bar, then the preference file is Foo_20_Bar and is stored in

OS Path
windows C:\Users\USERNAME\AppData\Roaming\VASSAL\prefs\Foo_20_Bar
macosx ~/Library/Application Support/VASSAL/prefs/Foo_20_Bar
linux ~/.VASSAL/prefs/Foo_20_Bar

You can try to delete that file to go back to the “factory settings” of the module.

What do you mean “load all the files in the fleet chart”?

Perhaps you could share your module and give precise instructions on how to recreate your problem. See also How to report problems. Also remember to tick off the solution when you have it - that really helps others find the solution to their problems.

Yours,
Christian