Trouble with Update Manager

[ODLogan]

Two things:
First of all, I uninstalled transmission due to personal preference, but update manager still prompts me to update it.
Secondly, when I tried to get some other updates, I got the following message:

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

[kellemes]

Two things:
First of all, I uninstalled transmission due to personal preference, but update manager still prompts me to update it.
Secondly, when I tried to get some other updates, I got the following message:

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


From terminal window..

sudo dpkg --configure -a

[ODLogan]

Obviously, but what do I do from there?