if it's xevan, it's not X11 :-)

try "-a xevan"

"url" : "stratum+tcp://yiimp.ccminer.org:3739",
"user" : "BSD add",

[2016-11-23 16:35:10] Starting Stratum on stratum+tcp://yiimp.ccminer.org:3739
[2016-11-23 16:35:11] Stratum difficulty set to 0.125

minerd -a X11 -o stratum+tcp://yiimp.ccminer.org:3739 -u # -p #

http://yiimp.ccminer.org/?address=

[2016-11-23 06:46:24] Stratum detected new block
[2016-11-23 06:46:24] thread 2: 4274 hashes, 5076 khash/s
[2016-11-23 06:46:24] thread 3: 33309 hashes, 50.13 khash/s
[2016-11-23 06:46:24] thread 1: 119951 hashes, 50.26 khash/s
[2016-11-23 06:46:24] thread 0: 1877113 hashes, 50.73 khash/s