Purchasing having trouble opening SW files (eDrawings)

Our buyers have recently started sending out sw files to our vendors for quoting (why they don't send pdf's I don't know). but Purchasing can't open the .slddrw with edrawings "Access Denied" and "Contact file owner to obtain permission".  IT is scratching their heads at this and I'm not sure what to tell them.  Purchasing is located in our Production facility across town so I'm guessing it's network related since i haven't heard of this issue at our downtown location (Engineering/Sales&Support). 


I know trying to send out the .slddrw file isn't going to give the vendor any info anyway without the .sldprt/.sldasm files anyway. 

Any thoughts?

Thanks

SolidworksDrawings And Detailing