AdwCleaner detects the Sakura virtual instrument uninstaller from Image-Line.
http://www.image-line.com/plugins/Synths/Sakura/
I am fairly sure this is a false positive. It isn't detected when Sakura is uninstalled.
# AdwCleaner v6.041 - Logfile created 24/12/2016 at 13:44:37
# Updated on 16/12/2016 by Malwarebytes
# Database : 2016-12-23.1 [Server]
# Operating System : Windows 10 Pro (X64)
# Username : Username
# Running from : C:\Program Files (x86)\AdwCleaner\adwcleaner_6.041.exe
# Mode: Scan
# Support : https://www.malwarebytes.com/support
***** [ Services ] *****
No malicious services found.
***** [ Folders ] *****
No malicious folders found.
***** [ Files ] *****
No malicious files found.
***** [ DLL ] *****
No malicious DLLs found.
***** [ WMI ] *****
No malicious keys found.
***** [ Shortcuts ] *****
No infected shortcut found.
***** [ Scheduled Tasks ] *****
No malicious task found.
***** [ Registry ] *****
Key Found: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SAKURA
***** [ Web browsers ] *****
No malicious Firefox based browser items found.
No malicious Chromium based browser items found.
*************************
C:\AdwCleaner\AdwCleaner[S0].txt - [1038 Bytes] - [24/12/2016 13:44:37]
########## EOF - C:\AdwCleaner\AdwCleaner[S0].txt - [1111 Bytes] ##########