AppleScript - Syntax Error: Expected end of line found """.

The following AppleScript code works on Tiger and Snow Leopard but not on Leopard (10.5 > 10.5.8).

tell application "FileMaker Pro"
tell database "SomeDB.fp5"
-- some code to execute
end tell
end tell

In Leopard, the code won't compile and is complaining of a Syntax Error: Expected end of line found """. I click OK and then the quote symbol ( " ) to the left of SomeDB.fp5 is highlighted.

Has anyone else experienced this and have resolved this in Leopard?

Thanks