CGMiner no output (LTC GPU mining)
Apparently I do not have enough points yet to give your answer a vote, but your solution also worked for me! Adding -T to the command line command did the trick. Not only do I now get a neat output of what is happening; the -T parameter also made the entire mining process actually work!

Before adding the -T command:
Screen flashed with the "Started CGMiner 3.7.2" message.
No messages were shown until I pressed CTRL + C.
The report said that only one share had been submitted and accepted - every time I ran CGMiner.

After adding the -T command:
The screen doesn't flash any more. 
Everything that happens is outputted line by line to my command prompt.
CGMiner is actually working and submitting shares. As we speak I'm on a total of 3616 accepted difficulty shares, contrary to 32 before.