It looks like you’ve listed a filename or VST plugin identifier, likely from a Windows VST3 installation of Waves plugins.
Rescanning: If errors occur, users should perform a "Clean Scan" in their DAW. In FL Studio, this involves selecting "Verify Plugins" and "Rescan previously verified plugins" in the Plugin Manager. Vst Plugin Waveshell1-vst3 11.0-x64 -vst3-
The WaveShell1-VST3 11.0-x64.vst3 is essentially a "bridge" or container. When your DAW (like Ableton, FL Studio, or Cubase) scans this single file, the WaveShell tells the DAW which specific Waves V11 plugins you have licensed and installed. 11.0: Refers to the version of Waves (V11). x64: Indicates it is a 64-bit architecture file. It looks like you’ve listed a filename or
The Waveshell1-vst3 11.0-x64 plugin might be used in various audio production scenarios, such as: or Cubase) scans this single file