Var must be object

Does this error message suggest anything:
Line 12086 (File "C:\Program Files (x86)\PGSD Toolbook Plugins\PowerPac\JSPowerPac.exe"): Error: Variable must be of type "Object".
This is showing up in the lessons we produced for a client a couple of years ago. The lesson design uses a lot of Flash objects. I was re-exporting a lesson using the latest powerpac because I got a report that a series of demo lessons taken from this project, suddenly are failing under IE10, Firefox and Chrome.
Thanks,
Pete
Line 12086 (File "C:\Program Files (x86)\PGSD Toolbook Plugins\PowerPac\JSPowerPac.exe"): Error: Variable must be of type "Object".
This is showing up in the lessons we produced for a client a couple of years ago. The lesson design uses a lot of Flash objects. I was re-exporting a lesson using the latest powerpac because I got a report that a series of demo lessons taken from this project, suddenly are failing under IE10, Firefox and Chrome.
Thanks,
Pete