InfoPath Dev

I have a user continually receiving the following error.

"This form template is not currently browser-enabled. It must either be republished as a browser-enabled form, or opened using Microsoft Office InfoPath 2007."

When I originally created this form, it was created using InfoPath 2007. My version of InfoPath has since been upgraded and is now 2010. The form needs to remain an InfoPath Filler 2007 form as we are using SharePoint 2007 and I have various filters that would not work if the form was browser enabled.

This user seems to have begun experiencing this problem after my upgrade to InfoPath 2010. I've double checked all the settings for the form and the form library that this form is a content type of. No where does it say it should be browser enabled.  I've republished several times. The user continues to receive this error.  She is using InfoPath 2010 to open this form.

I've attempted to use this form with no troubles.

 The user has Infopath 2007 but not 2010 installed locally and you have republished the form template as 2010?

Or the user has locally Infopath 2010 and you republished the template with compatibility "Infopath Filler 2010 Form"?

The user has InfoPath 2010, however, as the site is 2007, the form is InfoPath Filler 2007 form.

My user is still having this trouble. I've attempted republishing the form several times. I've double checked the settings. It is most definitely published as an InfoPath 2007 Filler form.

 Any suggestions at all?