SmartFTP freezes after extended connection

right after upgrade to 973, smartftp appears to work properly. but after a while, when i drog another file to the connected remote host, the program freezes itself. the file never get transferred, the program simple freezes itself. there is no response, and its window never repaints.

this happens on w2k sp3, which is really annoying since i have to kill it via task manager several times each day.

is there anyway i could roll back to the previous 971 version?

Try using the last development build.
https://www.smartftp.com/Products/SmartFTP/SFTPDev.exe