Data in cells not available to anonymous user

Nice lightweight module and very easy to use.

I have been using tablemanager and was looking for an alternative. I found by creating a new content type and using the 'Insert Node' module I could insert a table anywhere in the page content as I can with the tablemanager filter.

One problem though. Everything works OK with admin permissions but when I checked access as an anonymous user I found each cell was showing N/A. I thought this was due to 'Insert Node' but I have the same error if I access the table content directly i.e. the table is not embedded in another content type using Insert Node. Hope this makes sense.

I guess this is a permissions issue so am I overlooking some permission settings for tablefield?