On Win 7 64 bit, if a CF card is inserted, the "show ingest dialog" does not start and a new folder is shown on the folder bar with the title "-autoplay:L:" (L: is the drive with the cf card). Selecting "File / Ingest" results in a new folder tab being open but the "-autoplay:L:" tab remains.
The option "On mount of Camera Disk" has the "Show Ingest Dialog" enabled.
On 4.6.6 the auto-ingest dialog properly starts as expected.
I removed 4.6.7 and re-installed 4.6.6. The ingest dialog starts properly. I then install 4.6.7 and it fails to start.