Backup Script Error

Nov 11, 2009 at 7:50 PM

When I try to run the script I am getting this error:

File d:\SPBackup\spbackup.ps1 cannot be loaded. A required certificate is not within its validity period when verifying
 against the current system clock or the timestamp in the signed file.
At line:1 char:20


I cannot figure out what certificate it is looking at or how to get the script to not error out.  I would greatly appreciate any help.