When using NPrinting with a QlikView Leased License CAL, the following symptoms may be experienced:
NPrinting is sometimes failing to generate reports.
The user account assigned to run the NPrinting service receives a message when trying to open QlikView documents, "QlikView document was created by another QlikView Personal Edition user".
A manually leased CAL or a QlikView Desktop License should be use with Qlik NPrinting service user account (Qlik NPrinting Engine Service user account).
NOTE: A Leased License CAL (dynamic or manually leased) may be used on 2 machines at most, but not at the same time. This will result in the NPrinting service preventing any other machine from using the same Leased License CAL, while running.