My GoogleEarth Cache went off

I had increase my GoogleEarth cache with 2000MB disk size.

i had been 446MB of cache.
then i accidentally install the lower version of GoogleEarth.

Now i do still have that 446MB of cache file (*.dat). But my visits form the GoogleEarth went off. It is not show any of the places … that i have visited before …

Is there any solution to get those cache to workable.???