But as we reported on December 28th, there has been bugs with video AdSense units that has been restricting many users from signing up. In fact, the bug was first reported on December 21st, and then acknowledged by an AdSense representative. The bug appears to have never been resolved.
A new Google Groups thread started on January 3rd, reports a similar, if not the same, error when signing up for AdSense Video units.
I am seeing "Your account is still pending approval" and underneath that, "Adsense error: An internal error has occurred. Please retry your request."
This time a different Google AdSense representative saw the report, on January 9th, and replied:
Thanks for updating us on this issue. I have passed on to our engineering team all the information that you have provided. Thanks for your patience while they investigate this matter,
When will this be resolved? I am not sure, I assume it is not a priority. But there is a scheduled AdSense maintenance update this weekend.
Forum discussion at Google Groups.
Update: This was now fixed on January 11th.