You may issues viewing the Live Parts Add-in toolbar in Solidworks following initial installation of the software. If this occurs, make sure you are viewing Solidworks at the assembly-level. The Live Parts Add-in toolbar operates only at the assembly-level (i.e. you can only create Live Parts features at the assembly level and NOT at the part level), so it will not be visible if you are editing a part.
If you are still having issues, try opening one of the sample assemblies - for example, the "swingarm" file - located at C:/Program Files/LivePartsSolidworks/assemblies (or the relevant location where you installed the LivePartsSolidworks software) and view in assembly mode.