I'm not sure that this is the best place to put this but I thought it might be a good place to start.
Running a Win 10 laptop
Processor Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2401 Mhz, 2 Core(s), 4 Logical Processor(s)
Blender Version 2.77a
I am using a Tablet to work inside of blender and there seems to be an error that crops up every now and then that I would like to have resolved.
I have mapped a button on the tablets pen to the middle mouse button through the tablets config menu. I have been using the blender shortcuts. "shift+middle","ctrl+middle","middle" to zoom pan and pivot my view.
While working on a file the shortcuts for "shift+middle" and "ctrl+middle" became none responsive but the "middle" shortcut for pivoting still worked fine. previously I have either saved, closed and reopened the file, remapped the keys or started the project from scratch.
The solution seems to be variable though mt memory is fallible, I am fairly sure I have used the first solution though if it did work for me before it certainly isn't now. As for remapping the keys and resetting the blender user preferences I know that I clicked and unclicked those particular setting shortcuts before within another file to regain that functionality but it seems that time was a fluke.
I really didn't even know what to google to begin looking for a solution to this issue. If anyone at the very least can explain why this is happening in the first place it would be greatly appreciated. Even more so if anyone can think of a work around.