Red arrow won't upload files

Seems Dreamweaver always grants me a random end of the year problem for me to resolve. This year, I'm seeing a red arrow when uploading files within Dreamweaver. These files won't upload. I've spent 2 hours with Adobe Tech Support to no avail. Does anybody have a solution to this ever increasing frustrating problem? Thanks.

Steps taken to resolve issue (with no resolution):

Cleared cache

Tranferred files from FileZilla (worked, but doesn't solve my problem w/ DW)

Altered site root settings

Checked DW Accessibility settings (set to allow DW)

Etc.