Recently my htc widgets have not been available for my home screen (friend stream, mail music, twitter etc) Im not sure what caused it but none the less its happened.
To get them back is pretty simple.
Note: this will completely reset your home screen layouts and wipe any saved layouts
1. Make sure you have over 15mb free space2. Open Settings
3. Select Applications
4. Select Manage Applications5. Scroll to HTC Sense and select it
6. Hit Clear data
7. Press the home button and wait
8. You will now see your widgets available when trying to add via one of the home screens