st: Errror in cendif - tidotforsomersd(): 3499 tidottree() not found

[Richard Palmer-Jones <rpjstatalist@googlemail.com>]

Dear Readers

I have the following error:

. cendif incompc, by(_treat)
variable incompc not found
r(111);

. cendif incomepc, by(_treat)
Y-variable: incomepc ((mean) incomepc)
Grouped by: _treated (psmatch2: Treatment assignment)
Group numbers:

  psmatch2: |
  Treatment |
 assignment |      Freq.     Percent        Cum.
------------+-----------------
------------------
  Untreated |        260       33.85       33.85
    Treated |        508       66.15      100.00
------------+-----------------------------------
      Total |        768      100.00
       tidotforsomersd():  3499  tidottree() not found
                 <istmt>:     -  function returned error
Mata run-time error
r(3499);


treat is 0/1; incomepc is continuous

cendif is dated 4th August 2008, and somersd has teh same date.

tidotforsomersd():  3499  tidottree()  are bothe in c:\ado/plus/t
which is in my ado path.

. which cendif
c:\ado\plus\c\cendif.ado
*! Author: Roger Newson
*! Date: 04 August 2008

. adopath
  [1]  (UPDATES)   "C:\Program Files\Stata11\ado\updates/"
  [2]  (BASE)      "C:\Program Files\Stata11\ado\base/"
  [3]  (SITE)      "C:\Program Files\Stata11\ado\site/"
  [4]              "."
  [5]  (PERSONAL)  "c:\ado\personal/"
  [6]  (PLUS)      "c:\ado\plus/"
  [7]  (OLDPLACE)  "c:\ado/"

I am running Stata 11.1 born 16/6/2010

All advice very gratefully recieved.

Richard

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