Hsie, > Before I run 6.10.1, I ran ldm 6.9.8 with the same size queue without > any problem??? In that case, I suspect that your product-queue has been corrupted somehow. You can check the product-queue with the pqcheck(1) utility: pqcheck -v > Hsie Regards, Steve Emmerson Ticket Details =================== Ticket ID: LNE-454384 Department: Support LDM Priority: Normal Status: Closed