I finally uninstalled LO 5 and went back to 4.4.6. I do believe it has to do with Windows 10 and its first just released service pack.
The bug I found was LO 5 loaded and started quite nicely until I tried to use Impress. Every single time I tried to use the Master Pages on the side bar the program locked up. At this point all the drop down menus drop down as blank boxes. Before I used the side bar Master Pages everything worked. Including all the other side bar functions. But as soon as I used the Master pages feature everything ceased from working. I could x out of the program and it would close without asking me to save the document. That was nice. So I tried it again and again and again with the same results every single time.
After uninstalling LO 5 and reinstalling 4.4.6.3 everything works properly. So LO 5 is not compatible with Windows 10 new service pack. Which is essentially a completely new update/upgrade of the entire Windows 10.
Oh yeah, I own 5 laptops and 2 desktops all running Windows 10 and everyone of them had the above described problem. So its not a fluke on just one brand of machine. By the way, I like windows 10 and believe it will only get better with each service pack. These kind of problems have been rare for me which is unusual with a new OS.
UPDATE:
I can’t sleep when I have a computer problem and can’t seem to fix it. First thing I do is go online and see if someone else has already resolved my issue. If no one has then I end up staying up sometime for 24 hours trying to fix it and I usually can come up with something through trial and error. LO 5 is slow and buggy but I see the potential and can’t wait for the fixes to come out. I think Microsoft may thrown them a curve with this New Upgrade of Windows 10. Never the less I found part of the problem with the Impress and why it was doing the above problem that caused me to write this thread. During the years that I have used LO, I have acquired quite a collection of templates for Impress. Some I made and many I got off the site. It seems that LibreOffice 5 does not like all templates except the ones that come with it. I deleted all my added templates and LO 5 has started working. It boots up very fast but then slows down so that version 4.4.6.3 is still faster and smoother functioning over all. Never the less Version 5 is going to be great when all the little bugs are worked out. I need to send Libra another $20 dollars. I know it ain’t much but every little bit probably helps.