When searching for the "full version" specifically for Windows XP, you must understand the version history. The last compatible builds for XP were Nero 9 (officially) and Nero 10 (unofficially with updates). However, Nero StartSmart Essentials refers to the lite/entry-level suite that came bundled with OEM drives (LG, Samsung, Sony).

While "Essentials" was a lighter version of the full Nero suite, it still packed a punch regarding media creation. It offered the ability to create VCDs (Video CDs) and SVCDs, which were the precursors to DVD burning for many home users.

Users could import video files and create simple menus, effectively turning their home movies into disc-based cinema. Additionally, the photo slideshow feature was a hidden gem. It allowed users to drag and drop digital photos, set them to music, and burn them to a disc that could be played on a DVD player—a magical experience for families gathering around the TV to view vacation photos.

Solution: This happens on XP SP2. Upgrade to SP3. Or, delete NeroCheck.log in C:\Program Files\Nero\Nero 9\Nero StartSmart\