I did not update since 4.6.8 and I didn't experience any problems with it on my Snow Leopard machine but now I migrated to a Lion machine. Migration copied all the programs and settings form the old system so I had not reinstalled anything on the new system and neither had I to change settings as all the path settings and all stayed the same.
But Ingest with PM had an error on the Lion machine. PM seems to be unable to create the folder on the root directory for the ingested photos.
What can cause this? Is it the older version of PM or the lack of installing instead of just migrating PM from the old system? Is it a known issue or I found something new?