Update: This issue magically went away many days after we reported it and now we are asking to understand this fundamental bug involving the inabilility of customer portal users to "update" and "delete" data in order to avoid it in the future.  Salesforce support told us that only premier customers and partners can get a direct answer to this question and therefore we were directed to this support site in hopes of understanding these issues and avoid them in the future.

Previous post from April 28th, 2014:
This is a new issue that appeared with the Spring 2014 Salesforce update.

We have a customer portal user.

They try to update an object that they own and they created.

Yet we see a "Data Not Available" error message.



This seems to only affect the customer portal users
Also if we remove "sharing", it works.

But we want to understand why suddenly this stopped working?

The release notes https://help.salesforce.com/help/pdfs/en/salesforce_spring14_release_notes.pdf refers to sharing sets here:

But we are seeing that even the user that created the record cannot update it.

@isTest(SeeAllData=true)
         private class Test1Class {
         static testMethod void validateTestCrash() {
       
            user u = [select id from user where username = 'cduissue1@issue1.com.issue1'];
            system.debug(u);
            system.runas(u){
                adviser_profile__c adviser_profile = [select id from adviser_profile__c limit 1];
                system.debug('qqq adviser_profile: ' + adviser_profile);
                try {
                  update adviser_profile;
                }catch (Exception e){
                   system.debug('qqq3 validateTestCrash error adviser_profile: ' + adviser_profile);
                }
                system.debug('qqq2 validateTestCrash adviser_profile: ' + adviser_profile);
            }
        }
        }

Even worse, we never see either the Exception debug line NOR the final debug line.

The code simply aborts and even the salesforce log shows nothing but a simple exit, NO MESSAGE AT ALL!!!

SALESFORCE WHAT IS GOING ON???!!!