Is it an Error 1 or an Error 11? If latter, click Info / Debug then type
PRINT MODCODE$
It's trying to find that module code in the Sy_Module data file. Go back into Link Maintenance, choose the Paperless link type (btw was it forms, register, journals, ?), and if it lets you go this far without erroring, then just do a lookup on Module Code and see if you see something unusual. What you should be seeing is a filtered list of modules codes associated with Paperless (forms, registers, journals, whatever it was). I'm guessing you have to go back into Paperless / Setup and fix a record in one of the maintenance screens. BTW is it 90 or 200 and which version ..