Crystal Linking Sales Orders to Shop Jobs

I am trying to write a Crystal Report that links the Sales Order Detail
to the Job Detail File.

I understand the links:
Customer>SaleHead>SalesDetail>JobProd>JobHead>JobOper

I can write a nice sales by customer report and a similar jobs by
operation, but when I try to link them through the JobProd file Crystal
becomes non-responsive.

Any suggestions?

John H Gunderson
The Freeman Company