Queued file problem

When publishing ASP.net website files, SmartFTP nearly always stumbles on replacing a few files and I have to intervene by pausing the job queue, then manually deleting the files concerned then re-starting the jon queue. The files are nearly always the website config file and one or more website assemblies. I would say that the ASP.net worker process has these files open or watching the web.config for changes made to it and I'm guessing this is why SmartFTP is not just overwriting these files whithout my intervention.

How can I get SmartFTP to just overwrite these files regardless?

Dear Nigel ..

Do you have a log from the transfer queue item/file you can post? To get it just double click the file in the transfer queue that doesn't process. Then the log window opens.