Why did someone I sent to get the following error message: "The files are no
longer available. Contact the sender to request access to the files again."
I sent the files with no time limit for availability just a day or two ago.
That's quite bizarre. Do you still see the transmission in your Sent Files? Does it say that it's still available?
Yes, the transmission is still there. I forwarded to transmission to the same address and it was received OK. Go figure.