Tigl viewer crashes without report when xml not valid

[PSeelemeyer]

When an invalid xml scheme is opened, Tigl crashes without a report. The event is for exemple triggered by this block:

                        <positioning uID="Turbine_Blade1_Sec1_Pos">
                            <name>MyPosition</name>
                            <length>1.5</length>
                            <sweepAngle/>
                            <dihedralAngle>0.0</dihedralAngle>
                            <toSectionUID>ExpTurb_Blade1_Sec1</toSectionUID>
                        </positioning>

where the sweep angle should be defined as

                            <sweepAngle>0.0</sweepAngle>

, however a report from tigl about the error would be helpful.