Crashing on certain score

My daughter uses Musescore extensively but her largest composition to date has started to crashes the program. I send in the crash report. From reading some support forums I believe the problem to be in the file since it happens on one particular score only. How do I go about fixing the problem? I don't see a function to audit or repair damages scores. The score opens without error and you can start to edit or play it but then it crashes. I have tried the score on two different computers with the same results. Version: 3.4.2.9788 Revision: 148e43f. I have attached the score.