I hate to say it, but.. "not enough information.. insufficient data.."
I would analyze the network connections of all four, noting any differences between the first three and the fourth. Then check browser settings (assuming all four are using the same browser.)
PS. Is the fourth computer a Mac or *nix OS??
I have a client where 3 computers are not having this issue, however 1 computer is and the IT staff is saying that it's my code (Okay). When this users goes to a page where there is cffileupload code, all they see is a large 'X'. Does anyone have an idea where I can go to start troubleshooting this issue for this one computer? There are no error within the browser logs or any js errors.
That is probably because that particular computer used a browser on which Flash was either disabled or not installed. ColdFusion's multi-upload widget requires Flash to display. So, make sure that Flash is installed and enabled on the browser.
Nope, they are all the same OS and browser.
BK, good catch! I'll check this on Monday, thanks!
@MusicmanMD, any joy getting rid of the X?
@BKBK, you were right on. They all had Adobe Flash on their machine however the one with the 'X' was missing a second Flash plugin. Once installed everything worked as it should, with no apologies from the IT staff.