Don't double post, and they are not OFFICIAL forums
Easily done:
Step 1 - Goto your graal directory folder ( default = C
Program Files\Graal or C
Graal )
Step 2 - Open the folder levels, then open the folder tiledefs.
Step 3 - Look for tiledefsEra.txt, and open the file. Do the same for tiledefsOffline.txt
Step 4 - Copy ALL the text inside tiledefsEra.txt, and paste it in tiledefsOffline.txt. Click Save.
Step 5 - Open Graal Editor, it should work now.
That is the basic way of getting tiles for any server, you can also use a script, but I don't have a time to write one for ALL the tilesets era uses.. so this should work fine.
Levels must start w/ era_ to load.