Cant load server map
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Can someone help me figure out how to save and load maps for my server in minecraft beta.
When i start the server up it just makes a new world and wont let me load an old one.
Note: i am running mac os 10.6 and am in minecraft beta
i get this error when trying to load a different map
[SEVERE] Unexpected exception
ho: The save is being accessed from another location, aborting
at fv.h(SourceFile:1846)
at fv.i(SourceFile:322)
at fv.a(SourceFile:315)
at fv.f(SourceFile:1475)
at gc.f(SourceFile:37)
at net.minecraft.server.MinecraftServer.h(SourceFile:293)
at net.minecraft.server.MinecraftServer.run(SourceFile:235)
at cu.run(SourceFile:512)
Thank you