You could add a bug report ?
I have no windows, but on my linux I see backups in walletbackups folder for each day
Just in case, you can also backup manually.
!backup
Make sure you have a backup of 1. your wallet.dat and 2. gridcoinresearch.conf files, and 3. the directory: walletbackups. (Without both (1.+2.) you've LOST your Gridcoins.)
They are located in Windows: %appdata%\GridcoinResearch (and for linux: /home/your_user/.GridcoinResearch/ )
Want to install the backup'd files somewhere else?
Thanks. I back up all of these things regularly, so I'm not in jeopardy of losing the coins. I opened a new issue on github: https://github.com/gridcoin/Gridcoin-Research/issues/292
your avatar is the best.