Help with remove.Instance function removing the wrong row

Hi there,
I have been working on Livecycle forms for about two weeks now and have been able to work out quite a bit of what I need to do.  However, I am really hoping someone can help me with a two problems that I cannot seem to solve. 
The first one is; if I click on the 'remove a row' function on my form and it is the only row, it comes up with an error message,  How do I stop that from being displayed?  I think I need to use the IF function with >1 but cannot seem to get it to work.
Secondly, if for example I add two rows using the +row button to make three rows and in rows 1&2 I input some data.  If I then want to delete row 3 and press the -Row button it deletes row number 2 and the data in that row and leaves row number 3.  How can I change it so that when I delete a row it deletes row number three and leaves row number 2.  essentially, I need it to delete rows from the bottom up and not from the top down.  Hope this makes sense.  Any help would be greatly appreciated!
Attached is a link to my form.
https://copy.com/RiktBtj0uiSA
Thank you.

Hi there,
When removing instances within an object's event which is inside the instance, you must make sure that you remove this particular instance at the end of the event.
E.g.:
If you remove the instance of which the button is inside before even finishing the whole event, the program will not recognize what event is to be finished because you have removed the object's which is fired..
So here you are trying to finish some code which doesn't exist anymore ...
I suggest you should always remove the instance of (this) object at the end of any event to make sure to finish all your actions before deleting the object.
Hope this help!

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