Add try/catch block to ideogram repaint.  We're having intermittent startup bugs here.
Add try/catch block to ideogram repaint.  We're having intermittent startup bugs here.

NabaviLab/CNV-Visualizer,NabaviLab/CNV-Visualizer,igvteam/igv.js,NabaviLab/CNV-Visualizer,NabaviLab/CNV-Visualizer,igvteam/igv.js,NabaviLab/CNV-Visualizer