Windows 10 - Screenshots not being taken or saving?

[Thulghor]

So since I've upgraded to Windows 10, I've noticed an odd bug. Seems like it doesn't actually save all the screenshots I take, especially if I do them within a few minutes (or tens of seconds or so) or each other. Was trying to track a bug down, and this kinda hampered my efforts. Tried to take about 15 shots, got around 4 actually saved. Wasn't having this problem on Windows 7. Could it be a permissions thing?

I run EQ on an AMD Ramdrive, so I checked both the RamDisk Image and memory tested (Memtest 86+) my RAM, all seems to check out ok.

Any advice would be much appreciated. You guys rocked helping me figure out the zoom in issue earlier.