Problem Stuck in "nonexistent" Mystcraft world

[Corbett31]

I was creating a mining age on my server and when I tried to enter the age I was given a Failure to spawn Biome message and my client would crash. I read around some and tried to delete the mining age data from the world file in order to retry but now when I attempt to log on the server says im in that world which does now not exist. Any ideas on how to fix this?

 

[cjm721]

Delete your player.dat file or go in with NBT editor and change where you are at.

 

[Corbett31]

Delete your player.dat file or go in with NBT editor and change where you are at.

What would I change in the file for me to switch worlds? I see the coords option but nothing to change what world I'm in

 

[cjm721]

Dimension:

 

[Corbett31]

Dimension:

What would I change that to for my normal overworld? 1?

 

[cjm721]

0 is over world -1 nether 1 end