During this week we made several tests with regards to LIFTdesigner PDF generation. Actually we thought at the beginning that the new LIFTdesigner version 5.4 had an error in PDF creation.
In unpredictable cases and in the case that you drag a pdf from the Windows Explorer into IE (or Firefox) the web browser crashed. After extensive tests, installations and uninstallations of Adobe Reader version 9 and version 8, back and fourth, we identified Adobe Reader 9.3 as the reason for the crashes.
After uninstalling version 9 and going back to the lastest version 8, everything is working as expected.