hum, this seems to be a new problem...
1- Did you install any mod ?
2- Just after you got a freeze, could you send me all the files in :
- "C:\Program Files\Tennis Elbow 2011\Profiles\Default\", if you play with men
- or "C:\Program Files\Tennis Elbow 2011\Profiles\Default\Wta\", if you play with women
If you created a Custom Profile, replace "Default" by the name of your profile.
Join your Player and Tournament bases if you modified them.
Compress everything in .zip or .rar file (to reduce the size) and send them to the email address you got your license key from.
3- Send me also this file : C:\Program Files\Tennis Elbow 2011\System.log (possibly twice : after a freeze, and after a clean game exit).
4- You could try to reinstall the full demo setup over your current installation ; it may help fix things (no need to uninstall 1st).