I may have had a similar problem (don't remember, must have been 10 years ago), but the only solution would be to upgrade to a more recent QlikView version, as yours isn't supported anymore and upgrades cannot be downloaded since a long time.
Why don't you upgrade to a more recent QlikView version?
The license cannot be the reason (I'm still using a license I got in the 7.xx days). The lack of maintenance payments can. And lack of maintenance and support are important consequences you are facing right now.
You can wait a while longer to see if someone remembers having had the same problem and what can be done about that. But chances are extremely low...