Lock/Unlock on Airport disc

Hi,
I've just had to uninstall Espionage because it has caused me some Finder crashes,
I like the look of Espionage so I thought I'd start testing it and set up a couple of simple folders. I set these up on an external disk under Airport.
Basically creating the folders - no problem.
Opening the folders for the first time - no problem.
Locking the folders for the first time - no problem.
Subsequently unlocking/ locking has no effect.
Espionage would show both folders locked, but I had complete access. I could not change the status using the menu bar demon, as the discs greyed out after the first lock/unlock operation. Changing the status in the Espionage main window has no effect.
I tried re-launching Finder and get a -10810 error.
The only way to lock the folders was to reboot the system to get the Finder back, eject the Airport volume, then re-connect the volume.
I know there have been some problems reported of this -10810 error with Snow Leopard, and connected perhaps to Launch Services, but I had no problems prior to installing Espionage, and I have none since uninstalling the program.
I have tried a similar test with Knox, and also with Truecrypt, and neither of these has had any problem in creating and re-using images on the airport disc.
I would like to be able to use Espionage, so any suggestions you might have would be most welcome.
Dave
I've just had to uninstall Espionage because it has caused me some Finder crashes,
I like the look of Espionage so I thought I'd start testing it and set up a couple of simple folders. I set these up on an external disk under Airport.
Basically creating the folders - no problem.
Opening the folders for the first time - no problem.
Locking the folders for the first time - no problem.
Subsequently unlocking/ locking has no effect.
Espionage would show both folders locked, but I had complete access. I could not change the status using the menu bar demon, as the discs greyed out after the first lock/unlock operation. Changing the status in the Espionage main window has no effect.
I tried re-launching Finder and get a -10810 error.
The only way to lock the folders was to reboot the system to get the Finder back, eject the Airport volume, then re-connect the volume.
I know there have been some problems reported of this -10810 error with Snow Leopard, and connected perhaps to Launch Services, but I had no problems prior to installing Espionage, and I have none since uninstalling the program.
I have tried a similar test with Knox, and also with Truecrypt, and neither of these has had any problem in creating and re-using images on the airport disc.
I would like to be able to use Espionage, so any suggestions you might have would be most welcome.
Dave