InfoPath Dev

I am new to Infopath...well, at least 2 weeks into it.  I am trying to understand how it interacts with project server and have been working with one of the codeplex solutions.  Unfortunately, I am getting this error both on my local (development) machine and in the document library in Sharepoint.  Has anyone come across ...

Thanks so much, mgarant.  I was afraid I would have to resort to code.  So now, I am thinking of a function that allows me to do this but defining a field as where can specify month plus 1.

I have an Infopath (2007, SP2) form that looks like a spreadsheet.  It is designed to allow users to enter number of hours across the spreadsheet.  Each column represents a month and there will be up to 24 months.  I have been looking high and low for any rules or logic which will allow me to display today() as mm/yy and then ...