Your blueprint has too many parts, try to split it.
The maximum size is not really known atm. We have the same problems on our server, can't blueprint whole buildings (about millionen parts or so ;)) or have to split it.
I hope they'll fix it. 
If you've got the steam version go on libraray - rising world - rightclick - properties - beta - choose beta. I have the ability to choose between 3 versions of the game.
Maybe this could solve your problem.
Unfortunately the latest update deleted all chunks with too many construction elements (it was causing massive problems on multiplayer servers, mainly due to a MySQL limitation, but it affected all worlds, even when using SQLite). From now on, it's no longer possible to store more than 65.535 construction elements in a single chunk.
However, your old world prior conversation was stored in a hidden ".backup" subfolder in your World folder (only when using SQLite or in Singleplayer). You also have to switch back to a previous version of the game (as @Deirdre described), otherwise the world will be converted again. The last version is unfortunately the outdated 0.6.3.1 (prior the biomes update), but we can upload a temporary 0.6.4.5 version in a few hours 
This allows you to store the building in a blueprint.
If it still does not work when storing in a blueprint, can you eventually send the according blueprint to me (via support@jiw-games.net or PM)? Then I can have a look at what's going wrong there^^
I always create backup on my game and bp, every 2-3 day
Definitely a wise decision
A chunk are 16x16x16 block or 16x16xwhole height? And 65.5k its so many item, I was a bit crazy when I decorated the screen choir, but I dont think I was that crazy
Chunks are 16x16x64 (length x width x height). But the previous limitation was already hit with 2000-4000 elements, so when this amount of construction elements was placed in a single chunk, it was unfortunately removed automatically with the latest update 
If you're able to recover the old data, it should work from now on (due to the new 65.5k limit). If you can't save it in a blueprint, please let me know
What program do u use for your blueprints??
What program do u use for your blueprints??
You can create blueprints ingame by using the "Blueprint" item (craftable at the workbench). You don't need any external tools for that
I think he did...it looked like some program. And I know
Yea, next time when making a blueprint of a large structure, make sure to do it in pieces.
Also make sure when you cover the whole structure, to stand in front of the structure, for if you do not, you will not be able to rotate it.
