enewsletter - Cannot choose a template

Hi

When a create a new template, I have the option to "Choose a template". When I click on the "Choose a template" dropdown I see various options e.g. "Disco", "Handwritten", etc.

However I cannot select any of the templates, it only gives a "I" under the Disco option, above the "Responsive theme with: max width 500px, max content width 449px, header image support" wording with nowhere to click.

I'm running:

Wordpress 3.7.1 (clean install)
in a IIS 7 shared hosting environment
PHP 5.3
Perl and CGI-BIN enabled

Thanks