Open Build Sotftware Issue

I have just downloaded ver 1.0.386 of the software. I seem to have a problem the software allows me control of of all three axis I can switch the spindle on and off. But when I go into the control wizard I am unable to select the surfacing wizard and the whole program freezes. The only way to close the program is with the task manager I have uninstalled the program and re-installed from the open builds website. still not resolved. where can I find an earlier revision of the software. Software working fine until this update