What is error code -1407

I have an 8-core Nehalem mac pro 2.26 ghz running 10.6.8 and got error -1407 after I removed a boot camp partition that I had on a second internal drive.

At first I ws going to install W7 on the second drive with the bootcamp partition but changed my mind and decided to try the free VirtualBox from Oracle instead. After removing the partion with BCU I started to get error -1407 when I tried to move items to the trash on the second drive. I haven't tried restarting yet to see if gets rid of the problem.

What gives? Thnx ahead of time for any help or hints.