Deleted Storage Unit still thinks it has valid images

I keep geting the following message repeated in the Problems report following the deletion of a disk storage unit:

 

sts_get_lsu_prop_byname on LSU G:\Incremental failed: 13

Invalid STS storage device: G:\Incremental

system call failed - No such file or directory (at common.c7259)

 

I have followed the instruction detailed in article http://support.veritas.com/docs/287428  but I get an "entity not found" message for the two images listed.

 

Can anyone tell me how to get shot of these pesky messages?

 

Steve