Tiledefs
 

This is pretty much speculation as to why it's happening... but I think I have found a pattern in it all.

If you are on a server that has never had any tiledefs defined, and a script tries to define some for the first time you get this error:

File download: tiledefsXXXXXXXXXXX.txt not found

and the tile definitions do not load. This will not correct itself until you close and restart Graal. This is very annoying, and can greatly hinder a professional presentation of Graal. If I'm a newbie and I log onto Graal for the first time, and go to check out a server and even though it is scripted fine, I end up getting stuck in a level because pics1 is still set even though it uses type 1 instead of type 0(meaning different blocking tiles) and I'm walking over trees, and there are all kinds of tile errors... well I wouldn't think too highly, especially if I wouldn't figure a restart would fix the problem.

Perhaps defaultly create a blank tiledefs txt when you first log on a server before scripts load up?