Somehow, I forgot to post bootstrap.dat links --

I order to import via bootstrap.dat, you must place the file within your client's data storage directory.

Windows default: %APPDATA%/Xencoin
*nix default: ~/.xencoin
OS-X default: ~/Library/Application Support/Xencoin

When the client is started, it will auto-detect bootstrap.dat and import the blockchain.

When I tested this on both client versions I have, it worked without issue - but the older 0.6.3.x clients are slow as sin on import - most likely from lack of optimizations on SSE/SCRYPT that newer clients have (among other issues). 

When import is complete, bootstrap.dat is renamed bootstrap.dat.old (or something to that effect) - it can then be deleted.

Files are stored at Mega, in two archive formats - 7Zip (windows) and a gzipped tarball (*nix/OS-X)

xencoin-bootstrap-20150322.7z: https://mega.co.nz/#!YIZE3LZA!qBn37YIpBSyMlJFb6ZOrY0ObnHGVK4TM01G1f-J-Fr4
xencoin-bootstrap-20150322.tar.gz: https://mega.co.nz/#!tI5jVAjC!9qDn_rSg1AcNFXS4iDA8sZrJxWSDLWSh2QxQ6frDAb4