We are currently aware of this issue that is affecting some users on Windows 10 and working on an update that will be released to solve this.
In the meanwhile, if this is interrupting your workflow, please follow these steps to help rectify this issue:
1. After Evernote crashes, open it again (this time Evernote should open normally)
2. Make sure all of your recently changed or added notes are synced with Evernote web under www.evernote.com
3. Go to File > Exit