Synaptic problem uninstalling

[Carlton]

I had installed a game, Chromium through synaptic. The game doesn't play 
well on my system. When I went to uninstall I get the error message 
'unable to allocate memory' synaptic did however, remove the data files. 
Now if I unmark it I get the same error as Synaptic tries to reinstall 
the datafiles. I don't want to use the game but I cannot uninstall it or 
reinstall it. Consequently anything I do wish to intall that is 
alphabetically after it doesn't go. How can I get around this?

Carlton