first of all thank you for this great software....

but I'm having a some problem in that software hope you could help me to fix it ..

when I trying to modify walls, modify rooms, modify furniture, modify Text and modifying anything the panel is can't appear and also facing problem to use textures, text and colors ...
I don't understand what should I do to fix it ..

by the way I didn't do any lock any base plan and I also try to reinstall it many times to fix that problem

and I'm using sweet home 3d version 5.4 Java version 1.8.0_51
Windows7 32bit

please respond fast as will
I will be very delightful if you help me to fix it ....