Different user but I get all invalid shares.
My 1 and 2 looks just like what you posted.
Command line is: start /low xptminer.exe -o ypool.net -u USERNAME -p PASSWORD -d 0
Just using a R7 250. It went from 2,200 kh/s to 2,500 kh/s.
If you're using an R7 250, your #1 should look different from mine.

Also, I'm assuming USERNAME and PASSWORD are your worker name and password?
Can you post your device listing? I'd like to see if the code runs properly on your CPU but not your GPU.
It should look like this:
Available devices:
Platform 00: Intel(R) OpenCL
Device 00: Intel(R) HD Graphics 4000
Platform 01: AMD Accelerated Parallel Processing
Device 01: Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
Sorry I can't figure out for the life of me how to insert image.
But user and password was just changed for the post.
Platform 00: AMD Accelerated Parrallel Processing
Device 00: Oland
Device 01: Tahiti
Device 02: Intel Xeon CPU L5520 @ 2.227 GHz
Device information for: Oland
CL_DEVICE_GLOBAL_MEM_SIZE: 2097152 kb
CL_DEVICE_GLOBAL_MEM_CACHE_SIZE: 16kb
CL_DEVICE_LOCAL_MEM_SIZE: 32 kb
CL_DEVICE_LOCAL_MEM_TYPE: CL_LOCAL
CL_DEVICE_MAX_WORK_GROUP_SIZE: 256