Infoview failed scheduled reports

Hi, I am getting the following errors on some reports I am scheduling:

Status:  Failed

Creation Time:  7/3/2009 4:19 AM

Start Time:  7/4/2009 4:20 AM

End Time:  7/4/2009 4:20 AM

Server Used:  gbvaspbo-001.Desktop_IntelligenceJobServer

Error Message:  File acyuchmdoqngqbxef7sqiue.rep not found on File Repository Server.

I am running many reports, all in the same way, but only certain reports are failing in this way. This is on XIr2.

Help pls. Thanks.