Can't connect to FTP servers

Using rev 71441.
I've tried to connect to an FTP server in various ways and it always fails.
Using the console client it freezes after inputting the password.
Using WinSCP it displays a window with the following message
"Invalid access to memory:
Stack trace:
[007F752C] Iedriveinfo::GetNetWorkConnected
(000271FB) ntdll.dll

[007F752C] Iedriveinfo::GetNetWorkConnected
[00BE1962] C4799_0
[00BE39CA] ____ExceptionHandler
[00BE0944] __ExceptionHandler
(000271FB) ntdll.dll"

Using Firefox I get a 425 error code.