Unable to move "F:\******\RecycleBin~d52a.ffs_tmp" to the recycle bin

[rtX]

I'm getting the above error message together with ERROR_FILE_NOT_FOUND: The system cannot find the file specified. [IFileOperation::PerformOperations] when I try to sync folders.

This is something I've not encountered as an issue before. FFS seems to try to delete the file that must be there from an earlier (failed?) sync after discovering it, but then cannot find it when it comes to deleting it. As there are four such files, this happens every time I sync. Is there an easy way that I can manually find and delete these files?

Many thanks.