Hi Chuckincw,
This is the first time I have heard of this message, I will have the error message looked in to on our end and let you know the results when I have them.
I also do have a few questions:
1: Are you using a 32 or 64 bit operating system?
2: How many Campaigns are you uploading?
3: How many adGroups are you uploading?
4: How many text ads are you uploading?
b: Are you updating a previous ad you have created?
5: How many keywords are you uploading?
6: Has this worked before?
7: Where does the error display?
8: Have you attempted to restart Ace?
Please let me know as these may be helpful in correcting the issue.
Thank you,
Brian H - MSFT