The last working DUDE was 6.46.3, after that it crashes a lot.
I do have a 6.47.1 semi functional, takes 30 attempted log ins to get in, and i only have 5% of the network on it and its easy to crash
6.47.4 and zero crashes on a RB1100AHx4 Dude Edition.
Have some issues with it, like remote upgrades getting stuck on upload all the time, but crashing is not one of them.
After many years loging into this forum to see always the same response i've moved on. It's sad because i really love the dude, it's a awesome application that now is an abandonware. I migrate all my database to Zabbix and i'm trying to replicate the dude experience with moderated success.