If you need help using seUVBlendShape, please first read the FAQ below in case there is an answer to your problem. If you still need help, feel free to contact me at: seuvblendshape@scottenglert.com
Note about Maya 2016: If using the new evaluation graph, please first test if the cause of the problem is coming from the graph by switching back to regular dependency graph mode to see if the issue is resolved or not. This will also help troubleshoot where the problem may be happening.