Again when the report loads but show no data there are a couple of things to consider,
a. The data connection which you say is working and sounds like it is.
b. The data query or record selection formula itself. You said this report takes parameters. It could be the parameters are the trouble, without knowing how you have set the report up to receive them, its hard to diagnose. An empty report could simply be saying that 'no records were found'. That would be a data query problem.
c. I did a search on the internet for your error message and there were a number of results. You would have see which one makes sense for your circumstance. You may want to do the same and see if your answer is already posted somewhere else.
Sorry I can't be of more help. Perhaps someone else on the forum will have better suggestions.
Regards,
John W.
ww.CustomReportWriters.net