Design everything disappears after viewing design when exception occurs (vb.net)

The design is all blank like all buttons tabs and everything have disappeared but the actual designer is still normally and usable no errors whatsoever. here is a few screen shots to share my pain (this hashappened twice): http://ift.tt/2fQtNwj http://ift.tt/2fwG59d please help me i spent a long time on this.