I received the following error message:
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
E: _cache->open() failed, please report.

Is this referring to Drive E?
I am a newbie and will greatly appreciate any help or insight as to what to do. Thank you.

No.The 'E' signifies an error message.
This is not Windows.

Try what has been suggested,type the following in a terminal:

It is telling you the answer.

Open a Terminal and input: sudo dpkg --configure -a

Be very careful to get the correct case, the correct spaces and the correct number of hyphens. Tip: Copy and (RIGHT click) paste into the Terminal to avoid mistakes.

I tried typing sudo dpkg --configure -a into a terminal window but no help. Is there anything else that I can check? Thanks.

After closing all apt processes (Synaptic, running apt-get/dpkg, ...) and running
in a terminal as suggested, try
and then retry what you were previously doing, for example
You can also try cleaning the cache if it's troublesome, though I don't think this is going to help much here:

After closing all apt processes (Synaptic, running apt-get/dpkg, ...) and running
in a terminal as suggested, try
and then retry what you were previously doing, for example
You can also try cleaning the cache if it's troublesome, though I don't think this is going to help much here:
When you run (for the first time in a moment) any command with 'sudo', you will be asked for your password. Type it carefully: nothing is printed on screen while you type. Like said, be careful when typing in the commands; if you for example leave off a space between two options (for example between '--configure' and '-a'), they're interpreted as one option which will probably fail. If you still don't get anywhere, you should copy-paste the error output here (except if it's the same as before: then you can just say so) so people can see where you're going. You should also mention if you've done (or tried to do) any modifications to your system that might affect the case at hand -- maybe changed some configuration files (of apt in this case), for example.

Apt can be a little picky if it's interrupted for some reason..hopefully you'll get this straightened out!

Thank you very much bOuncer. I ran the scripts you provided and then ran 'sudo dpkg --configure -a' again. It Installed!
I received one message stating that I need to run 'Broken' filter to find one package that isn't properly installed. I need to figure out how to run the filter. Thanks again to everyone who has replied to my post!