I've got a AS applet I've run for quite some time under Tiger and Leopard to do nightly back-ups of user folders. It uses the following call

	do shell script "hdiutil create -srcfolder '" & srcPathUnix & "' '" & dstPathUnix & "' -format UDZO -ov" user name thisUser password userPW with administrator privileges

Last month I rolled over to Snow Leopard.

NOW....

....when I run the script from inside a script editor. It works fine. BUT when I run the applet itself, it fouls up. It looks like it never finishes the .dmg. I get error messages when I try to open the resulting .dmg. Things like "resources temporarily unavailable" or "no mountable file systems".

Any ideas on what might be causing this?