InfoPath Dev

 You should be able to do this just by fiddling around in the designer.  Try placing your cursor in the blank space below the table and pressing Backspace until the cursor moves up to the bottom right of the table.  You'll still see space beneath the table, but when you preview the form, you'll see that there's actually ...

Sounds like some of the controls on your form are obeying the font-size settings in your Internet Explorer (View->Text Size). I believe you can get around this by opening up the Font taskpane in InfoPath design mode (Format->Font) and in the Pick formatting to apply: section, choosing Clear Formatting at the top (for each affected control). ...

 Could you also provide a screenshot of your data source?  Sorry for not asking the first time.

 Could you show us the sum expression you have so far, and the exact filter expressions that you are using?

[quote user="JRodimus"]So I did what you suggested (swapped groupName with group1) and pasted the copy above into the data source for the expression box. Unfortunately, I keep getting the following error :-( Expected value type: , Actual value: .. count(preceding-sibling::my:../../my:group1) = 0[/quote]   The expression ...

 Could you attach a screenshot of your data source from the taskpane?  Essentially, you're probably going to want to use the expressioncount(preceding-sibling::my:groupName) = 0Where groupName is the name of the repeating group to which the repeating table is bound.

 I'm not quite sure what it is you're trying to accomplish, but might the attached form be along those lines?  Here I've used a second horizontal repeating table bound to the same repeating field as the editable one, and used some expression boxes, with conditional formatting to hide the comma for the first cell.

 Awesome.  Glad to hear you figured it out, and thanks for sharing your final solution in an easy-to-read format so that it can help others.

 The simplest thing to do would be to use conditional formatting hide the expression box if the fields are blank, or if they're not always blank at the same time, split it into three expression boxes: [field1][, ][field2] and hide the middle one when field1 or field2 is blank. Similarly, the easiest thing for your second scenario would ...

 Did you read my post?  I didn't suggest that you use "All occurrences of TriggerValue."  I suggested an alternative.