We created a convert button that will convert from one object to another.  It works on Administrator profile but wont work on other profile.  I enabled all APEX Classes Access and Visualforce Page Access but it still doesnt work.  Any work around you can think of? 

what I've done
- redo the APEX
- recreate the VF Page

 

APEX CLASS
public class ControllerProposalConvertView {
    public Id pId;
    public String convertedAccountId;

    public ControllerProposalConvertView(ApexPages.StandardController stdController){
        pId = ApexPages.CurrentPage().getParameters().get('id');
        System.Debug('#######leadId:' + pId);
    }


    public PageReference convert(){

        try{
        Proposal__c p = [SELECT Id, name, Already_Converted__c, Property__c, Square_Footage__c, Lot_Size__c, Lot__c, Cap_Rate__c, Term__c, NOI__c, Lease_Commencement_Date__c, Rent_Commencement_Date__c, Lease_Expiration_Date__c, Years_Remaining__c, Lease_Notes__c, Gross_Leasable_Area__c, Options__c, Original_Lease_Term__c, Suggested_List_Price__c, Broker_Relationship__c, Broker_Relationship2__c, Commission__c, Escrow_Fees__c, Existing_Debt_Retirement__c, Pre_Payment_Penalty__c, Title_Fees__c, Transfer_Tax__c FROM Proposal__c WHERE Id=:pId LIMIT 1];
        
        if (p.Already_Converted__c  =='Not Converted'){
        Listing__c c=new Listing__c(Name=p.Name, Property__c=p.Property__c, Square_Footage__c=p.Square_Footage__c,  Lot_Size__c=p.Lot_Size__c, Lot__c=p.Lot__c, Cap_Rate__c=p.Cap_Rate__c, Term__c=p.Term__c, NOI__c=p.NOI__c, Lease_Commencement_Date__c=p.Lease_Commencement_Date__c, Rent_Commencement_Date__c=p.Rent_Commencement_Date__c, Lease_Expiration_Date__c=p.Lease_Expiration_Date__c, Years_Remaining__c=p.Years_Remaining__c, Lease_Notes__c=p.Lease_Notes__c,Gross_Leasable_Area__c=p.Gross_Leasable_Area__c,Options__c=p.Options__c,Original_Lease_Term__c=p.Original_Lease_Term__c,Suggested_List_Price__c=p.Suggested_List_Price__c,Broker_Relationship__c=p.Broker_Relationship__c, Broker_Relationship2__c=p.Broker_Relationship2__c,Commission__c=p.Commission__c, Escrow_Fees__c=p.Escrow_Fees__c,Existing_Debt_Retirement__c=p.Existing_Debt_Retirement__c,Pre_Payment_Penalty__c=p.Pre_Payment_Penalty__c,Title_Fees__c=p.Title_Fees__c,Transfer_Tax__c=p.Transfer_Tax__c);

        System.Debug('#######c :' + c );
        insert c;
        p.Already_Converted__c='Converted';
       update p;
        convertedAccountId = c.Id;
        System.Debug('#######convertedAccountId :' + convertedAccountId );
        }
        
        else{
                String sServerName = ApexPages.currentPage().getHeaders().get('Host');
        sServerName = 'https://'+sServerName+'/';
        PageReference retPage = new PageReference(sServerName + '/apex/ProposalConvertView2?id='+ pId); 
        retPage.setRedirect(true);
        System.Debug('#######ALREADYCONVERTED' );
        
        return retPage;
        }
        
        }
        
        catch(Exception e){
            System.Debug('#######Error  - Exception [' + e.getMessage() + ']');
            return null;
        }
        String sServerName = ApexPages.currentPage().getHeaders().get('Host');
        sServerName = 'https://'+sServerName+'/';
        System.Debug('#######sServerName :' + sServerName );
        PageReference retPage = new PageReference(sServerName + convertedAccountId); 
        System.Debug('#######retPage :' + retPage );
        retPage.setRedirect(true);


        return retPage;
    } 
    public PageReference back(){
            String sServerName = ApexPages.currentPage().getHeaders().get('Host');
        sServerName = 'https://'+sServerName+'/';
        System.Debug('#######sServerName :' + sServerName );
        PageReference retPage = new PageReference(sServerName + pId); 
        System.Debug('#######retPage :' + retPage );
        retPage.setRedirect(true);
        
        return retPage;
    }      
}


VF PAGE 1

<apex:page standardController="Proposal__c" extensions="ControllerProposalConvertView"> <apex:outputPanel layout="block" style="font-weight:bold"> You are about to convert this proposal to a listing. Are you sure you want to do this? </apex:outputPanel> <apex:form > <apex:commandButton action="{!convert}" value="OK" id="OK" rerender="hiddenBlock"/> <apex:commandButton action="{!back}" value="Cancel" id="Cancel" /> </apex:form> <apex:outputPanel layout="block" style="font-weight:bold"></apex:outputPanel> </apex:page>

VF PAGE 2

<apex:page standardController="Proposal__c" extensions="ControllerProposalConvertView"> <apex:outputPanel layout="block" style="font-weight:bold; color:red;"> This proposal has already been converted to a listing. Please click the button below to return to your proposal. </apex:outputPanel> <apex:form > <apex:commandButton action="{!back}" value="Back" id="Cancel"/> </apex:form> </apex:page>

Hope this help for visuals