Upon upgrading to v1.5.1, Windows informed me that an error had occured. No printer drivers at all appeared installed. Upon reboot and reinstall, all other drivers are active, but no PDFCreator driver.
Same to me.
First attempt reports two dialog box, one for closing the spooler, one for an error listed in the log file. The error message was No printed created!
The following attempts are without warnings but still the printer is not installed.
This on Windows Vista/32, always updated.
Solved! Removed the program through control panel, runned ccleaner, restarted the pc, installed again.