WHAT WORKED FOR ME TO GET TKFE TO WORK:
Windows 7 64 Bit
1. Downloaded and installed the latest version of PC Studio from Samsung "New_PC_Studio_1.5.1.10064_2"
3. Put TK File Explorer 2.2 in compatibility mode for "Windows XP (SP 3)"
4. Ensured that the ONLY MODEM device in "Device Manager" is "SAMSUNG MOBILE MODEM". Driver files came up as follows when examining driver properties:
C:\Windows\system32\drivers\modem.sys
C:\Windows\system32\DRIVERS\sscdcm.sys
C:\Windows\system32\DRIVERS\sscdcmnt.sys
C:\Windows\system32\DRIVERS\sscdmdfl.sys
C:\Windows\system32\DRIVERS\sscdmdm.sys
5. Reboot phone while DISCONNECTED.
6. Start TKFE and connect phone after a few seconds.
7. Ensure you have a COM port visible and CONNECT.
IT worked every time after that. Hope this helps...