how do i get rid of recurring "Error in 'SearchOperator:loadjob':..."?

[sophy]

This was a question from IRC:

How do I get rid of recurring "Error in 'SearchOperator:loadjob': Cannot find artifacts within the search time range for savedsearch_ident 'xxxx'"?

[sophy]

from captain albania:

This occurs the first time a scheduled search that has an alert condition of the the form "rises/drops by" is execute. The reason for this error is that "rises/drops by" requires the artifacts of the previous scheduled time to be present to perform the comparison. If they're not this error is thrown.