Problem DW20 v5 crash

[Boomaholic]

So I finally got around to updating my server to v5 and now I'm having an issue with the following, I've tried Deleting DIM 7 world, renaming to DIM MYST-7. I'm thinking it has something to do with Twilight Forest & MYST clashing. At this point I may need to just restart my Server world. which I'm not looking forward to. Any help would be much appreciated

http://pastebin.com/tKEFWcQ3

 

[Furball75]

V5 is not a recommended release so it is use at your own risk that said you might be able to revert it back to v4 .Dim7 is the folder for twilight forest in the config it has the option to rename to use a different number

 

[ArcanianWolf]

you have to also remove\rename the agedata_7.dat file in the data folder of you world