The problem is with the ScriptingAdditions osax for AppleScript.
Other tools, such as Python, C++, etc. should work fine.
The osax does not play well under Snow Leopard. Depending on what you want to do, there are workarounds. To start, try setting the Script Editor to run in 32bit mode (get info about Script Editor). If you are calling the scripts from another program, or the shell, there are tricks with the "arch" and "osascript" commands to force 32bit mode as well. If you provide a bit more information about what you want to accomplish, and how, I can give you more help.
Also, I believe there is some light at the end of the tunnel regarding official support from Phidgets (as noted above). But, Patrick would have to comment on that.