As Twinaxx suggested, we would encourage you all to reach out to us through one of our Product Support channels (phone, email, or chat) so that we can investigate this.
I have not been able to replicate it, but we would want to try and collect app diagnostic and sync log information from you phones to see what could be causing this to occur.
If you visit the Support Center (www.garmin.com/support). You can find FAQs for common topics and contact information for Product Support teams in the UK.
I can confirm the Issue (using an Oregon 700) and reported it as well to the support. The crash does only occur in 4.6.4. The previous version workes fine.
@felkerino : Not a real solution and not for the weather alerts, but if you are in Europe (not sure if this option is available globally) you can turn off uploading completely (for all devices) by revoking your consent in Settings - Profile & Privacy - Data - Data Upload. You can later give consent again to enable uploading.
Same problem here. I've emailed Garmin Europe support, and it seems the problem has not been known before, and they do not have a solution. I cannot enter device settings for the past few weeks. It takes ages for Garmin to try to solve it and send solutions that eventually do not help. Last information that I got is that they need to send it to their tech dept ... I thought I've been emailing the tech support ... I am so disappointed.