Can't seem to wrap text (with effects) around a circle?

I believe what the original poster wanted was a way to make type warp along the curve. Illustrator's stock Text on Path effect merely rotates letters. That approach works okay with letters that are small in proportion to the curve. Bigger letters tend to look wacky and jumbled. Problems vary depending on the typeface used.

Astute Graphics' Reform Text plugin is the only solution I know of that will partially warp text to a curve and still leave the text in a live state. The art brush approach I've described previously is "destructive" since it requires converting the live text to outlines before turning it into a brush.

These are 'tabs' that will be printed - the 'Block' tab is how they will look - they will be applied (stuck onto) to a circular base, hence the need for the shape of them to wrap round a circle.