One reason that Concept may report an error OLN-801 " Error Opening Loadable File ", is that during the upload of a project from a controller containing a 984 Ladder Logic, a loadable is encountered that
does not reside on the PC .
Concept can and will upload 984 LL projects.
If the project contains a loadable like the Xmit block, the loadable file(s) must also be present in the Concept's Global DAT directory.
It will become necessary to manually place the loadable file into Concept Global DAT directory if it does not already exist there..