A customer just added an iMac DV running Mac OS 9.1 to a local area network that includes two other iMacs running OS 8.6. The iMacs all have FileMaker Pro 5.0.3 installed (yes, each a registered copy). One of the OS 8.6 machines hosts a FMP solution. The second OS 8.6 machine has no problem opening shared database on the network, but the OS 9.1 machine can not open the file on the network.
Checking the general application preferences on the OS 9.1 machine,