I have a table on my form that is set to prepopulate the current portal user in order to show a quickview form with current user information on the main form.
This works fine... sometimes. It was working fine last night, but today with no changes having been made I am getting permissions errors. If I remove the data from the contact lookup field it works again.
I am getting the following error.
and where the quickview form is located (the form does display until I hit next, then this error comes up in it's place)

the permissions are set as follows for now

this is how the field is being set

Originally I thought it was a local caching issue but today it gave me the same error when I tried a browser on a different computer that has not accessed the portal before.
hoping someone may have an idea