Unable To Resume Upload

Unable to resume uploaded file if connection breaked.
http://www.elekta.lt/~deep/bugs/err030.jpg

Log:
...
Opening data connection IP: 10.100.17.11 PORT: 1140.
REST 1087198444
Restarting at 1087198444. Send STORE or RETRIEVE to initiate transfer.
STOR LucasArts.rar
LucasArts.rar: Overwrite permission denied
TYPE A
Type set to A.
...

Other ftp clients (WinCMD) works just fine and continues upload...