stop without saving the trajectory

[NeXT1995]

I have built the ORB-SLAM2 and run the dataset successfully. But after running the dataset, the program just stops and the video turns grey like this screenshot. It doesn't save the "KeyFrameTrajectory.txt" as well. How can I solve this problem? Thanks!

[Richardyu114]

annotate two lines in system.cc(the same operation can be done to ORB_SLAM2 if you meet this problem!)

//if(mpViewer)
//pangolin::BindToContext("ORB-SLAM2: Map Viewer");