Well I was able to reproduce this issue on another computer with the same version, but using a different PDF document. I have a PDF document with several pages. I extract a page and attach to email and it works fine. Then I go to extract another page and attach then it crashes everytime. It only seems to happen on the SECOND extracted page. This happens on both computers and I'm sure I can replicate this on others as well.
It appears that using the 'Share' button on the top right is breaking it because I can use the little Mail icon on the top just fine. I also noticed that if I keep the extracted pages open, instead of closing them, and continue to extract pages afterwards it works fine.
Also I have another computer with version 10.1.6 that works just fine, but the version of 10.1.10 does not! Going to uninstall the update to see what happens.