Disappearing labels....bug???

[Anonymous User]

I'm having a strange problem with a script.  I have a template MXD set up with a bunch of text elements set up that I will be updating by adding values from a search cursor.  The script is to generate a soils by parcel report for non-tillable vs tillable Ag Land with adjusted CSR (Corn Suitability Rate) values.  Everything in my script works correctly except that all the labels (except roads) disappear when the map is exported to a PDF.

I cannot find anything in my script that would be causing the labels to disappear.  My first guess was that it had something to do with updating a bunch of text elements, but I ruled this out when I exported 2 PDF's (a test map BEFORE updating text elements and then the final version).  Labels were not present in both PDF's.  To update the text elements, I just created a dictionary where the text elements are the keys, and I add values from a  search cursor on the selected parcel by concatenating the value to the original text element for the report.  All my text elements come out correctly but no labels on the map. I am thoroughly confused. Here is my script:

'''
    Generates Soil by parcel report for the new Ag Land Adjustment
    Written by: Caleb Mackey
    Date: 5/3/2013
    Cedar County
'''
import arcpy, os
from os import path as p
from arcpy import mapping as m
from MemoryTableToolsDA import * # Custom module
from Gmail_tools import SendGmailMessage # Custom module
import subprocess
arcpy.env.overwriteOutput = True

print 'One moment please...'
def Menu():
    pid = raw_input('Type Parcel ID and hit Enter\n')
    GenerateSoilReport(pid)
    choice = raw_input('\nSearch another parcel? (y,n)\n').lower()
    if choice == 'y':
        Menu()
    else:
        return 0
    
def GenerateSoilReport(parcel_id):
    # Locals
    mapDoc = r'G:\PROJECTS\Cedar\Soils\AgLand_Report.mxd'
    mailing = r'G:\Data\Geodatabase\Cedar_County.gdb\Mailing_List'
    pars = r'G:\PROJECTS\Cedar\Soils\testing\CSR_AgLand_test.gdb\dissolve'
    address = r'G:\Data\Geodatabase\Cedar_County.gdb\ADDRESS\Addresses'
    realdata = r'G:\Data\Database\Cedar.gdb\REALDATA'
    fold = r'G:\PROJECTS\Cedar\Soils\Layers'
    symblyr = p.join(fold,'Selected_Parcel.lyr')

    # Copy soil summary parcels and add mailing info
##    tmp = r'in_memory\Selected_Parcel'  # having problems with this  
    tmp = r'G:\PROJECTS\Cedar\Soils\testing\Intersect_files.gdb\Selected_Parcel'
    query = '"PID" = \'%s\'' %parcel_id
    arcpy.Select_analysis(pars, tmp, query)
    if int(arcpy.GetCount_management(tmp).getOutput(0)) != 1:
        print 'Invalid PID, seleced %s parcels...please try again' %result
        Menu()  # call Menu

    # Copy fields (Custom tool)
    CopyFields(tmp, 'PID', mailing, 'PID', ['NAME','MAILING_ADDRESS','CITY_ST_ZIP'])
    CopyFields(tmp, 'PID', address, 'PID', ['FULL_ADD', 'CITY', 'ZIP'])
    CopyFields(tmp, 'PID', realdata, 'PARCELPIN', ['DEEDHOLDER','LEGAL'])

    # Create MXD object
    mxd = m.MapDocument(mapDoc)
    df = m.ListDataFrames(mxd, 'Layers')[0]

    # Create new layer file and add to MXD
    lyr = m.Layer(tmp)
    arcpy.ApplySymbologyFromLayer_management(lyr,symblyr)
    m.AddLayer(df, lyr, 'TOP')
    try:
        lyr = m.ListLayers(mxd, 'Selected_Parcel', df)[0]
    except:
        print 'Layer not found!\n\n'  # does not find layer if created from in_memory source
        for layer in m.ListLayers(mxd, '*', df):
            print layer.name

    # Select for zoom
    arcpy.SelectLayerByAttribute_management(lyr, 'NEW_SELECTION', query)
    df.zoomToSelectedFeatures()
    print 'Selected %s parcel.' %int(arcpy.GetCount_management(lyr).getOutput(0))
    df.scale *= 1.3
    arcpy.SelectLayerByAttribute_management(lyr, 'CLEAR_SELECTION')
    arcpy.RefreshActiveView()
    arcpy.RefreshTOC()

    # CLASSCODE dictionary
    class_dict = {0 : 'Ag Land', 1 : 'Ag Dwelling', 2 : 'Residential',
                  3 : 'Commercial', 4 : 'Industrial', 5 : 'Exempt',
                  6 : 'Other'}

    # Generate text element dictionary
    fields = ['SUM_CSR_Points','SUM_Unadjusted_CSR_Points','AVE_CSR','ACRES',
              'DEEDHOLDER','Point_Deduction','Percent_Change','CLASSCODE',
              'NAME','MAILING_ADDRESS','CITY_ST_ZIP','FULL_ADD','CITY','ZIP',
              'LEGAL', 'PID']

    # Get rid of NULLs
    with arcpy.da.UpdateCursor(lyr,['NAME','MAILING_ADDRESS','CITY_ST_ZIP']) as rows:
        for r in rows:
            if r[0] == None:
                r[0] = ''
            if r[1] == None:
                r[1] = ''
            if r[2] == None:
                r[2] = ''
            rows.updateRow(r)

    # Generate elm_dict                       
    elm_dict = {}
    with arcpy.da.SearchCursor(lyr, fields) as rows:
        for r in rows:
            elm_dict['Adjusted CSR Points: '] = round(r[0],2)
            elm_dict['Unadjusted CSR Points: '] = round(r[1],2)
            elm_dict['Weighted Average CSR: '] = round(r[2],2)
            elm_dict['Acres: '] = r[3]
            elm_dict['Deedholder: '] = r[4][:30]
            elm_dict['Point Deduction: '] = round(r[5],2)
            elm_dict['Percent Change: '] = round(r[6],2)
            elm_dict['Parcel Class: '] = class_dict[r[7]]
            elm_dict['ML'] = '\n'.join([r[8][:30],r[9],r[10].split('-')[0]])
            try:
                elm_dict['PA'] = '\n'.join([r[8][:30],r[11]]) +'\n%s, IA  %s'.title() %(r[12],r[13].split('-')[0])
            except:
                elm_dict['PA'] = 'No Situs Address'
            elm_dict['Legal Description: '] = r[14][:30]
            elm_dict['PID: '] = r[15]


    # Loop thru Text elms and add values
    for elm in m.ListLayoutElements(mxd, 'TEXT_ELEMENT'):
        if elm.text not in ['Mailing Address','Property Address']:
            if elm.text in ['PA','ML']:
                elm.text = str(elm_dict[elm.text.encode('utf-8')])
            else:
                elm.text += str(elm_dict[elm.text.encode('utf-8')])
    print 'Updated all text elements'
    arcpy.RefreshActiveView()  # tried to refresh here again hoping that would fix the problem...did not work

    # -----------------------------------------------------------------------------------------------
    # Export map to PDF and print (option to email)
    # PDF name
    pdf_path = r'G:\PROJECTS\Cedar\Soils\Customer_Maps'
    PDF = p.join(pdf_path, 'Parcel_%s.pdf' %parcel_id)
    print 'Exporting to pdf...'       
    if arcpy.Exists(PDF):
        arcpy.Delete_management(PDF)
        
    #  Export map document object to pdf
    m.ExportToPDF(mxd, PDF)
    
    del mxd
    
    # Return message to user
    print 'PDF Exported, to view open %s in the "Customer_Maps" folder.' % p.basename(PDF)
    print 'Sending document to default printer'

    # Locate AcroRd32.exe
    if p.exists(r"C:\Program Files (x86)\Adobe"):
        acroread = r"C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroRd32.exe"
    else:
        acroread = r"C:\Program Files\Adobe\Reader 11.0\Reader\AcroRd32.exe"
           
##    # # # Print PDF  # # #
##    cmd  = '"%s" /N /T "%s"' %(acroread,PDF)
##    proc = subprocess.Popen(cmd,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
    # Leave these out for now
    #stdout,stderr=proc.communicate()
    #exit_code=proc.wait()        
    print 'Successful'

    # E-Mail PDF to customer option (Custom tool)
    email = raw_input('\nWould you like to email this document? (y,n)\n')
    if email.lower() == 'y':
        em_add = raw_input('\nPlease type email address to send document\n')
        outname = 'CSR Report for Property Deeded to: '+ elm_dict['Deedholder: '].split(' ')[0]
        message = 'Hello,\n\nPlease see enclosed PDF document for the following {0}.\n' \
                  .format(outname)
        subject = '%s' %outname
        attach = [] # attachments must be in list
        attach.append(PDF)
        SendGmailMessage(message, subject, em_add, attach)

if __name__ == '__main__':

    # Start Program
    Menu()

I am attaching a before png of what the template mxd looks like (with all the labels) then the final product after I run the script and all the labels disappear.  I have tried everything I can think of and no matter what I do the labels are disappearing.  I have brought this to the attention of an Esri Analyst, but I do not think they have found a solution yet either... Has anyone else had this problem?

[ATTACH=CONFIG]24069[/ATTACH][ATTACH=CONFIG]24070[/ATTACH][ATTACH=CONFIG]24071[/ATTACH]

ArcGIS Standard 10.1 SP 1, Windows 7 64 bit SP 1

EDIT: In case anyone is wondering why the placement of text elements/data frames is slightly different between the two maps it is because I tested this with several different versions of the mxd in case the original was somehow corrupted, but I got the same results on the test mxd as well.

[Anonymous User]

It appears that there is a bug associated with using Python label expressions...This is what was causing my labels to disappear.  VB versions of the label expressions of the labels work fine...I do not know what in particular it was that was causing the issue, I have been using Python label expressions since I upgraded to 10.1 and until now have never had this issue.  I will post the NIM when it is created by Esri in case anyone is interested/having the same problem.