Solution: Give write access to Temp directory
https://forum.ultravnc.net/viewtopic.php?f=3&t=28187
Version: 1.0.9.6 (on both)
Server: Windows 2000
Viewer: Windows 7 x64
File transfer can copy files from the server, but can not copy ANY folders from the server. It says "Error: not accessible".
I can copy the individual files in the folder, but not the folder itself.