Please uninstall and reinstall Sonic. Also you have to tell us why after installing the Ulead products the Sonic is not working (any error messages, weird behaviour, etc...).
At a situation like this, you can try two approaches: First install the Ulead products and then install Sonic. Find out which product is working / not workin. Then try the other way, ie: install Sonic first and Ulead products next. Let us know. btw, if all products are working in the first approach, leave it as it it.
HTH / Good Luck.
Stone walls do not a prison make,
Nor iron bars a cage;
Minds innocent and quiet take
That for an hermitage;
If I have freedom in my love,
And in my soul am free,
Angels alone that soar above
Enjoy such liberty. - Richard Lovelace