first of all there's an error in the net use statement ;-) i don't think it works that way
Code:
net use z: \\server\share /u:MyDomain\MyUser MyPassword
If it still doesn't work remove the
line so you'll see there errors in the login message. Probably you have to put the %SystemRoot%\System32\net.exe to the ioFTPD system directory
Code:
[Events]
OnFtpLogIn = EXEC ..\scripts\mount_shares.bat
were you missing the \ ? ^^
bye =)