It would be nice to have a log file with more details on this issue.
Software Engineer, Kutir Mobility
Posted on behalf of Zebra Technologies
Hi Rachel, This is a common Xamarin issue and has several causes. When I've run into the before, it was because my Java Heap size was too small. I thought Microsoft had fixed that issue, but it might still be lingering depending on your version. Also check if enabling Multi-Dex fixes it.