Try deleting the file:

user/library/Application Support/Adobe/AIR/ELS/com.sohnar.traffic.Traffic

NOTE: The user Library folder is hidden by default in OSX Lion.

So, to unhide the Library folder in your user directory on Lion:

- Open Terminal (Applications/Utilities/Terminal)
- type in: chflags nohidden ~/Library/
- Hit enter
- Quit Terminal

- Open Finder.
- Navigate to  [YOUR USER DIRECTORY]/Library/Application Support/Adobe/AIR/ELS/
- Delete the folder named "com.sohnar.traffic.Traffic"