Keyrite not responding

[centxkj]

I have spent day and a half trying to change the key on some songs. I have been getting an error 'program not responding'. I tried closing and restarting with no luck. Then I tried reinstall using repair option and that didn't do it. Next I reinstalled using modify option and again get the program not resonding error. It doesn't make any difference whether I access Keyrite through MTU/MS or from the Keyrite icon on the desktop

The tracks I am trying to change play perfectly on the MTU/MS player and burn perfectly using the MTU/MS custom assembly function.

Any ideas where to go from here?