To fix this problem, please follow the instructions below.
1. Close Nicelabel.
2. Delete the following key and subkeys in Windows Registry:
* To access the registry, go to Start – Run on Windows XP or click the Start (Windows logo) - All Programs - Accessories - Run on Windows Vista and Windows 7. Type in regedit and click on Open.
3. Open Nicelabel.
Note: You may need to change permissions on the Key before you delete it. To change permissions in the registry, browse to the locations. Right click on the folder and choose permissions. Choose the user or group and check Full Control and then click OK. Then delete the Key.