I'm using sublime 3.0 Build 3143 and unfortunately it does not let me save one file, I've tested and saving it with npp or visual studio works just fine - this looks like sublime issue.
The error i get is that it's unable to save due to the "The requested operation cannot be performed on a file
with a user-mapped section open" error.
error: Unable to save X:\XYZ.cpp
Error: The requested operation cannot be performed on a file with a user-mapped section open.
I've tested running sublime as admin did not help.
Ok I found out the reason- it was EasyClangComplete package issue my guess is that it was trying to compile it when i was saving it (maybe some compatibility issue). Sorry for spamming the forum. May be anyway usefully for others.