New Update Prevents Install

[findthep]

Cleaning leftover files
Output folder: C:\Program Files\FileZilla FTP Client
Extract: filezilla.exe
Extract: fzsftp.exe
Extract: fzputtygen.exe
Extract: fzstorj.exe
Extract: GPL.html
Extract: NEWS
Extract: AUTHORS
Extract: libgmp-10.dll
Can't write: C:\Program Files\FileZilla FTP Client\libgcc_s_sjlj-1.dll

[botg]

Find out which program still has this file opened and close it prior to installing.