Can't write to .ini

Hi, sorry if this is in the wrong section or has been asked before but I have searched the forum and can't find the answer.

I have recently bought a new flash drive with a write protect switch.I am now using this drive for my portable apps.The problem I have is that when I try to close the menu I get a message saying :-
"Unable to write to F:\PortableApps\PortableApps.Com\Data\PortableAppsMenu.ini"

I can only close the menu if I unlock the drive or pull the drive from the USB socket.
I can understand why it would want to write to the .ini if I had altered the menu in some way but I have made no alterations so why does it want to write to the .ini.
Is there any way that I can close the drive while leaving the write lock on ( other than pulling it from the socket )

Thanks in advance, Brian