Anti-Virus Blocking Excluded Files

I’m using Comodo Internet Security 5.9.221665.2197 with signature version 11639 and have been having a problem with the anti virus blocking files it considers a virus which is stopping services starting with windows and just blocking access to the files. I have added the file to the exclusions in the anti-virus scanner settings as well as the folder it is contained in. The file is in the trusted files under defence+. The file is only blocked from access and execution while anti-virus is on if I disable just the anti-virus component I can use the file as normal.

The file in question here is the filezilla ftp server service. Which I am currently having to start manually due to this error.

Is there anything that can be done about this or something I have missed?

Also the error that occurs when trying to access the file while the anti-virus enabled is a access denied error.

Thanks for your help in advance.