InfoPath Dev

I am having trouble with digital signatures on my form. Whenever I post my form to SharePoint for others to fill out, it throws a message that the digitatl signature is corupt or expired. Even if I remove it, it still doesn't work. Am I doing something wrong? I want my form to be able to be signed digitally by the user. As the creator of the ...

Here is a snapshot of what I'm actually doing. There is also a Total field which should sum the price. Price is an actual field that is calculated using quantity and unit price Quantity Description Department Acct. Code Unit Price Price ...

That didn't work either unless I have the syntax incorrect

I have a field "Price" in my repeating table Price is a calculated field  with the following formula Quantity * Unit Price. I want a field "Total" to calculate the Sum of Price. How do I do that since in general Sum doesn't work on calculated fields?

I have created an info path form. Thre are  4 fields that are all interrelated. All of those fields are stored in an external Microsoft Access Table. Rather than right a specif if and statement for each item, how can I connect the fields on my infopath form so that they are always tied to eachother? Example. Each Job has a unique position ...