When viewing my Community profile in internet explorer I get the attached error message. Is this a problem with my template which is Joomlashacks Onyx or a problem with Community Builder? If so, how do I get rid of it popping up? It is OK in Firefox and Chrome. I have CB_1.4.0 installed on Joomla 1.5.22.

curvyObjecterror:
zero width box, cannot display
tag: TEXT AREA
id: cbpg_pgitemdescription
class: input curvyIgnore
Parent tag: FORM
Parent ID: pgadminForm

It does indeed look like a problem with your template. To confirm this please switch to a standard Joomla template and check for errors.
You'd need to edit the template to fix the error. If you're not familiar with template design you should report the problem to the designers of the template.