After a little research on my own, I found a troubleshooting hint for those having difficulty with apps functioning properly. If you go to the app store and download a free app, and then try to reopen the app that you were having trouble with, the problem often resolves itself. Don’t ask me why, but this works in a lot of cases.
Also, if you have trouble with apps locking up, you can delete the app from you device, log into the app store from the device, and redownload it from the “purchased” menu. This will often resolve issues with loading or opening an app.
If either of these hints helps you, please comment so others will benefit from your experience.