Hi
I'm trying to run a fairly simple survey (script below) with check boxes but the backbutton just doesnt seem to appear, running on V4?
Any help would be great. 
Kind Regards

Zoe

DATA RECORDING
------------------------------------------------------------------------------------------------------------------------------------

<data>
/ columns = [date time subject blocknum blockcode trialnum trialcode response latency expressions.timespentonpage script.elapsedtime]
/ separatefiles = true
</data>

<values>
/ t_start = 0
/ t_end = 0
</values>

<expressions>
/ timespentonpage = (values.t_end-values.t_start)
</expressions>

<defaults >
/ canvasaspectratio = (4,3)
/ canvassize = (100%, 100%)
</defaults>



******************************************************************************************************************************************
DATA ENTRY TASK - TEST A
******************************************************************************************************************************************

-------------------------------------------------------------------------------------------------------------------------------------------
EXP & SURVEY BLOCK
-------------------------------------------------------------------------------------------------------------------------------------------
<expt >
/ preinstructions = (dataentryintro)
/ blocks = [ 1 =dataentrytestA;]
/ postinstructions = (postworktestinstruct)
</expt>

<block dataentrytestA>
/ trials = [1=dataentrypg1; 2=dataentrypg2; 3=dataentrypg3; 4=dataentrypg4]
/ timeout = 210000
</block>

SURVEY ORDER

<surveypage dataentrypg1>
/ stimulusframes = [1= timer]
/ questions = [1=dataentryinstructionscpt; 2=dataentryQ1; 3=dataentryQ2; 4=dataentryQ3; 5=dataentryQ4; 6=dataentryQ5; 7=ROW1; 8=ROW2; 9=ROW3; 10=ROW4; 11=ROW5;]
/ ontrialbegin = [values.t_start=script.elapsedtime;]
/ ontrialend = [values.t_end=script.elapsedtime;]
/ itemfontstyle = ("Calibri", 1.8%, false, false, false, false, 5, 0)
/ showbackbutton = true
/ backbuttonposition = (50, 80)
/ showpagenumbers = false
/ showquestionnumbers = false
/finishlabel = "Continue"
</surveypage>

<surveypage dataentrypg2>
/ stimulusframes = [1= timer]
/ questions = [1=dataentryinstructionscpt; 2=dataentryQ6; 3=dataentryQ7; 4=dataentryQ8; 5=dataentryQ9; 6=dataentryQ10; 7=ROW1; 8=ROW2; 9=ROW3; 10=ROW4; 11=ROW5]
/ ontrialbegin = [values.t_start=script.elapsedtime;]
/ ontrialend = [values.t_end=script.elapsedtime;]
/ itemfontstyle = ("Calibri", 1.8%, false, false, false, false, 5, 0)
/ showpagenumbers = false
/ showquestionnumbers = false
/ showbackbutton = true
/ backbuttonposition = (50, 80)
/finishlabel = "Continue"
</surveypage>


<surveypage dataentrypg3>
/ stimulusframes = [1= timer]
/ questions = [1=dataentryinstructionscpt; 2=dataentryQ11; 3=dataentryQ12; 4=dataentryQ13; 5=dataentryQ14; 6=dataentryQ15; 7=ROW1; 8=ROW2; 9=ROW3; 10=ROW4; 11=ROW5]
/ ontrialbegin = [values.t_start=script.elapsedtime;]
/ ontrialend = [values.t_end=script.elapsedtime;]
/ itemfontstyle = ("Calibri", 1.8%, false, false, false, false, 5, 0)
/ showpagenumbers = false
/ showquestionnumbers = false
/ showbackbutton = true
/ backbuttonposition = (50, 80)
/finishlabel = "Continue"
</surveypage>


<surveypage dataentrypg4>
/ stimulusframes = [1= timer]
/ questions = [1=dataentryinstructionscpt; 2=dataentryQ16; 3=dataentryQ17; 4=dataentryQ18; 5=dataentryQ19; 6=dataentryQ20; 7=ROW1; 8=ROW2; 9=ROW3; 10=ROW4; 11=ROW5]
/ ontrialbegin = [values.t_start=script.elapsedtime;]
/ ontrialend = [values.t_end=script.elapsedtime;]
/ itemfontstyle = ("Calibri", 1.8%, false, false, false, false, 5, 0)
/ showpagenumbers = false
/ showquestionnumbers = false
/ showbackbutton = true
/ backbuttonposition = (50, 80)
/finishlabel = "Continue"
</surveypage>





-------------------------------------------------------------------------------------------------------------------------------------------
PAGE CONTENT
-------------------------------------------------------------------------------------------------------------------------------------------

1. INSTRUCTIONS

<htmlpage dataentryintro>
/ file = "dataentrytaskinstructions.htm"
</htmlpage>

<instruct longmemins>
/windowsize = (90%, 80%)
/ finishlabel = "Press [SPACE] to continue"
/ nextkey = (57)
</instruct>

<htmlpage postworktestinstruct>
/ file = "postworktestinstructions.htm"
</htmlpage>

2. TEST PAGE- DATA ENTRY TEST A

<clock timer>
/ mode = timer
/ resetrate = block
/ erase = false
/ txcolor = black
/ txbgcolor = white
/ fontstyle = ("Verdana", 40, true, false, false, false, 0, 5)
/ timeout = 210000
/ position = (50%, 10%)
/ format = "mm:ss"
</clock>

<caption dataentryinstructionscpt>
/caption = "SELECT the appropriate check-boxes for Task 3. You can tick more than one box."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,20)
</caption>

<checkboxes ROW1>
/ options=("A            ", "B            ", "C            ", "D            ", "E            ")
/ fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/ responsefontstyle = ("Calibri", 13pt, false,false,false, false, 0, 5)
/ orientation=horizontal
/ optionvalues = ("A", "B","C", "D" "E")
/ position = (20, 30)
/ required = true
</checkboxes>

<checkboxes ROW2>
/ options=("A            ", "B            ", "C            ", "D            ", "E            ")
/ fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/ responsefontstyle = ("Calibri", 13pt, false,false,false, false, 0, 5)
/ orientation=horizontal
/ optionvalues = ("A", "B","C", "D", "E")
/ position = (20, 40)
/ required = true
</checkboxes>

<checkboxes ROW3>
/ options=("A            ", "B            ", "C            ", "D            ", "E            ")
/ fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/ responsefontstyle = ("Calibri", 13pt, false,false,false, false, 0, 5)
/ orientation=horizontal
/ optionvalues = ("A", "B","C", "D", "E")
/ position = (20, 50)
/ required = true
</checkboxes>

<checkboxes ROW4>
/ options=("A            ", "B            ", "C            ", "D            ", "E            ")
/ fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/ responsefontstyle = ("Calibri", 13pt, false,false,false, false, 0, 5)
/ orientation=horizontal
/ optionvalues = ("A", "B","C", "D", "E")
/ position = (20, 60)
/ required = true
</checkboxes>

<checkboxes ROW5>
/ options=("A            ", "B            ", "C            ", "D            ", "E            ")
/ fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/ responsefontstyle = ("Calibri", 13pt, false,false,false, false, 0, 5)
/ orientation=horizontal
/ optionvalues = ("A", "B","C", "D", "E")
/ position = (20, 70)
/ required = true
</checkboxes>

<caption dataentryQ1>
/caption = "1)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,30)
</caption>

<caption dataentryQ2>
/caption = "2)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,40)
</caption>

<caption dataentryQ3>
/caption = "3)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,50)
</caption>

<caption dataentryQ4>
/caption = "4)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,60)
</caption>

<caption dataentryQ5>
/caption = "5)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,70)
</caption>

<caption dataentryQ6>
/caption = "6)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,30)
</caption>

<caption dataentryQ7>
/caption = "7)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,40)
</caption>

<caption dataentryQ8>
/caption = "8)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,50)
</caption>

<caption dataentryQ9>
/caption = "9)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,60)
</caption>

<caption dataentryQ10>
/caption = "10)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,70)
</caption>

<caption dataentryQ11>
/caption = "11)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,30)
</caption>

<caption dataentryQ12>
/caption = "12)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,40)
</caption>

<caption dataentryQ13>
/caption = "13)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,50)
</caption>

<caption dataentryQ14>
/caption = "14)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,60)
</caption>

<caption dataentryQ15>
/caption = "15)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,70)
</caption>

<caption dataentryQ16>
/caption = "16)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,30)
</caption>

<caption dataentryQ17>
/caption = "17)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,40)
</caption>

<caption dataentryQ18>
/caption = "18)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,50)
</caption>

<caption dataentryQ19>
/caption = "19)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,60)
</caption>

<caption dataentryQ20>
/caption = "20)."
/fontstyle = ("Calibri", 1.8%, false,false,false, false, 0, 5)
/txcolor = (black)
/position=(15,70)
</caption>

Backnavigation is only available if you run your <surveypage>s via a <survey> element. If you use a <block>, there is no possibility of backnavigation.