I am currently using v4.0beta3. It is fantastic and I love it. I am also successfully running it on a Win7 64 bit box with no operational issues.
My problem is this. I have made a some custom devices along with images (converted to.svg to keep things kosher with the Dude) and they show up just fine after i create them and then use them on the map. However, lately when I create new ones they show up fine UNTIL i have to restart the Dude for one reason or another (restart remote session, windows update box reboot, what ever). The images I use are around the same data size as the defaults so I don't think its a size issue.
So now one of my maps has nice custom images of switches and routers and firewalls and whatnot but my other newer maps are just bland green bars with text on them.
Is there a limit of how many devices you can create?
***Edit on 1-9-2012***
So I have tried uninstalling and reinstalling then restoring from saved config - no dice
reinstalled again this time installing directly on c:\ - no dice
tried different users (created those just fine) - nada
went in and get all users on the box full control rights to the folders - nothing
I even dropped my database commit rate to 15 seconds just to test - still not saving...
I can make all other changes and they get remembered when I log back in, but when I create a new device type, as soon as I log out and back in, bam, gone. However if I delete a device type, it stays gone! what the....