Error when trying to import worlds and improper loading of imported worlds.

[InuYasha86000]

I cannot seem to import any of my worlds into multiverse 1.7.10-2.5, i'm creating my own mod pack server running KCauldron-1.7.10-1448.133-server and have tried importing my worlds from an old 1.7.10 backup and from a recent 1.8 version and neither will import properly. I either get "Error , Cannot Import World" or something close to that, or it imports them but returns them to a fresh untouched world. other than the Error about not being able to import a world I get no other errors. any ideas what's going on?

[InuYasha86000]

I have updated the server to Kcauldron 1566 and the same issue is still present. it won't even recognize a previous world generated using the server itself.

[TWSSYesterday]

Update to latest KCauldron and try http://ci.onarandombox.com/job/Multiverse-Core/694/artifact/target/Multiverse-Core-2.5.jar Pastebin startup logs

[InuYasha86000]

I will have to use my dropbox for one of the logs as it's so big but here's the pastebin of the latest client log including an import attempt:http://pastebin.com/0tr2W2vS
and here's the dropbox link to the server side log: https://www.dropbox.com/s/zwcmyp9ntmv16s2/latest%20Kcauldron%20log.log?dl=0 once again the 2nd log is too big for pastebin that is why I dropboxed it.

[InuYasha86000]

is there anything else I can try and supply, and is this able to be replicated by you?

[InuYasha86000]

I have found something else out. for some reason multiverse is looking for world files within the main world folder. I tried to place a world within the main world folder and import it, the import DID work, however it then booted me from the server and when I logged back in it had replaced a bunch of modded items I had built with completely different items, pretty much ruining the world. but the imported world seems to be ok, no irregularities found so far.
[EDIT] correction, if I try to move much in the newly imported world (the one within the main world) it crashes the server, same as if I go to replace the main world with a different world entirely while still keeping the same imported world within the different main world folder, and the server will crash more if you try to move within the newly replaced main world. I hope this is easy to understand.

[InuYasha86000]

if it helps, I can supply a copy of my modpack I created for this server with the plugins it is using as well.