having a similar problem it seems a lot of others are having: i'm using the mod admin v1.4, assigning the 3.0 RC9 into the gamedata folder. When i first enter the VAB or hangar the options window pops up, but if i try to select where the settings tab appears, suddenly the game starts mis-representing my mouse position (i get the button highlight as though my mouse were hovering only if i am about +300px on the X axis, then when I close the menu not only do the part catalog tabs not appear, but all of my tabs to switch through the various part types at the top disappears as well.