When editing one of my larger maps ( 200x200 I think it is ) my map_maker crashed, looking at that map_maker black log thing, whatever it is it said, caused by: java.lang.OutOfMemmoryError. and a bunch of other stuff, so I went back on map_maker, because I remembered a tip talking about large maps... and it said to increase the heap size of gridarta's virtual memmory Machine when editing large maps, how could I do this? otherwise I can't edit my maps thanks.

Well, what are you doing editing a 200 x 200 map in the first place? You should make all your maps 24 x 24 and connect them together. You are unlikely to get anything in the game that isn't composed of maps 24 x 24 maximum, if that is what you want.

well, I didn't know how to connect maps toghether, so I made a big one instead

edit w32_start_editor.bat so that the line with DaimoninEditor.jar  looks like this:

javaw.exe -Xmx128m -Xms128m -jar DaimoninEditor.jar

    or this:

javaw.exe -Xmx256m -Xms256m -jar DaimoninEditor.jar

I always have 256+ memory when I am working on maps, as I do some of the same stuff, Make a big map, plot it out, then cut and paste onto a 24x24 area (map).  It work really nice to do it that way BTW.

Hence why i am a proponent to making maps dynamically loading so you can just scroll instead of (manually) loading the nearest 8 maps around the one you are working on.

thanks tehill, it worked great, sorry I couldn't respond earlier, wasn't home for a few days
err wait,which one? when I went to edit on it in the beggining it said...
REM *** this should start the editor **[]
cd editor[]
copy DaimoninEditor.jar.tmp DaimoninEditor.jar
java.exe -jar DaimoninEditor.jar[]
cd ..
there's two "DaimoninEditor.jar"'s I see..?
( it doesn't copy the little boxes, so I replaced them with "[]")

sorry to double post... but noone ever got back to my question.
my map_maker now looks like this in the edit thing.
REM *** this should start the editor **[]cd editor[]
copy DaimoninEditor.jar.tmp DaimoninEditor.jar[]
java.exe -Xmx256m -jarDaimoninEditor.jar[]
cd ..
and when I try to start the map editor the black screen pops up.. loads.. and dissapears, could anyone tell me my problem? thank you
EDIT: once again, the squares do not copy.. so I replaced them with "[]".

in /bin/win32 mine looks like this:

the extra line you have is for copying an update and that's ok.

also make sure you have installed current Java  JRE  http://www.java.com   it is free.

the squares should not really copy, nor should you care. its just a sign that notepad will display for unix type of line feed. replace them with just 'enter', and it should be fine