Mail suddenly only received as text

I have used Formm@iler for some time quite successfully.

I recently downloaded the newest version to try and stop so much spam.

Now I only seem to be able to receive mail in test format.

I have even replaced the code with a fresh copy and used the sample forms - result is still text only. (I have the variable set as: $mail_type[0]="vert_table";)

Any suggestions would be appreciated.