Add the game manyally then.
1. Upload the
content of the tar's "gamedata" folder (probably a folder called "yeti" something) in the arcade/gamedata directory.
2. Upload the 2 images in the arcade/images directory.
3. Upload the *.swf file in the arcade/ directory.
4. Go to AdminCP -> Arcade -> Add Game
You'll get this information from the *.php file included in the tar file.
Game Name = add the name here
Set Game on/off = on
Highscore type = HIGH
In category = choose
GNAME the most important!!
Decimal Points?
Game Background Color
Game width
Game Height
You can see gname from the swf file for example... If the swf is called "yeti7.swf" you'll have to put "yeti7" in the gname field.