Hello,myancey, & welcome to the WordPress support forum.
You don’t provide us w/any site url’s, which is sometimes helpful. You also don’t tell us whether you’re on a shared, VPS, or dedicated hosting plan, which can also be helpful in the event permissions might be problematic. Having said all that, though, the most common cause for issues after updating is that some of the files failed to download, in which case a reinstall fixes everything. That might be your first course of action.
If a reinstall does not work, then please try switching to a default theme & see if that helps. Also, please try renaming your plugins folder by appending a 1 or a .old to it & see if that eliminates the problem. If it does, then rename the plugins folder back but rename all folders inside of it except for one (probably Akismet) & try to update/install a plugin. Keep renaming the plugins back 1 by 1, trying to install a plugin each time until you cant, in which case you’ve just found the plugin causing the problem.
Please let us know whether or not that helped.