The game checks if the save exist, so if you see "Task Completed", the save should be there. The only thing I can think of is if the game file has been moved. The save correspond to the directory when you save the game. At least that's how it works on Windows.
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Sure. Local save location for Windows 7:
First narrow down the scope by going to this directory. **(See how to unhid AppData folder if you have it hidden: https://cybertext.wordpress.com/2012/05/29/cant-see-the-appdata-folder/)
C:\Users\[Your User Name]\AppData\Roaming\Macromedia\Flash Player\#SharedObjects\[Random Number]\localhost
And then search with the save's name: TTv4_Save.sol
This path should simulate where you store your exe or swf. For example, if the exe or swf is placed on your Desktop, TTv4_Save0.sol should be inside a folder call Desktop. Also exe and swf saves aren't compatible with each other.
I've done this before but I meant literally the name of the file (the random number file) because one day another game did it too and someone gave me the name of the random number file. Then I created the file with the exact random number name I was given and I don't know how but the game saved to this folder. And then the save file was here.