Prevents crash when clicking sum frames before actually filling out text boxes (which should be changed into number boxes sometime) Prepared for zooming in on summed frames.
Prevents crash when clicking sum frames before actually filling out text boxes (which should be changed into number boxes sometime)
Prepared for zooming in on summed frames.

PNNL-Comp-Mass-Spec/Atreyu,PNNL-Comp-Mass-Spec/Atreyu,PNNL-Comp-Mass-Spec/Atreyu