Remove annotations from the PDFView before reloading the pdf document. Hopefully this fixes some crashers, though I can't really imagine. But I don't understand why the crashes happen either. 
Remove annotations from the PDFView before reloading the pdf document. Hopefully this fixes some crashers, though I can't really imagine. But I don't understand why the crashes happen either. 

JackieXie168/skim,JackieXie168/skim,JackieXie168/skim,JackieXie168/skim,JackieXie168/skim