diff --git a/code/DAMASK.pyf b/code/DAMASK.pyf
index a3d741957..6510d94b5 100644
--- a/code/DAMASK.pyf
+++ b/code/DAMASK.pyf
@@ -75,7 +75,7 @@ python module DAMASK ! in
             complex*16, dimension(res[0],res[1],res[2],3,3),                depend(res[0],res[1],res[2])    :: defgrad_fft
         end subroutine deformed_fft
 
-        subroutine curl_fft(res,geomdim,vec_tens,field,curl_fft) ! in :math:math.f90
+        subroutine curl_fft(res,geomdim,vec_tens,field,curl_field) ! in :math:math.f90
             ! input variables
             integer, dimension(3),                                     intent(in)                                          :: res
             real*8,  dimension(3),                                     intent(in)                                          :: geomdim
diff --git a/lib/pathinfo b/lib/pathinfo
index 096885ef5..68f6c040e 100644
--- a/lib/pathinfo
+++ b/lib/pathinfo
@@ -1,6 +1,6 @@
 # possible options are MSC, FFTW, IKML, ACML, LAPACK
 
-#ACML  /opt/acml5.0.0
+ACML  /opt/acml4.4.0
 LAPACK  /usr
 FFTW  ./fftw
 MSC   /msc
diff --git a/processing/post/addCurl.py b/processing/post/addCurl.py
new file mode 100755
index 000000000..51afbfedc
--- /dev/null
+++ b/processing/post/addCurl.py
@@ -0,0 +1,207 @@
+#!/usr/bin/python
+
+import os,re,sys,math,string,numpy,DAMASK
+from optparse import OptionParser, Option
+
+# -----------------------------
+class extendableOption(Option):
+# -----------------------------
+# used for definition of new option parser action 'extend', which enables to take multiple option arguments
+# taken from online tutorial http://docs.python.org/library/optparse.html
+  
+  ACTIONS = Option.ACTIONS + ("extend",)
+  STORE_ACTIONS = Option.STORE_ACTIONS + ("extend",)
+  TYPED_ACTIONS = Option.TYPED_ACTIONS + ("extend",)
+  ALWAYS_TYPED_ACTIONS = Option.ALWAYS_TYPED_ACTIONS + ("extend",)
+
+  def take_action(self, action, dest, opt, value, values, parser):
+    if action == "extend":
+      lvalue = value.split(",")
+      values.ensure_value(dest, []).extend(lvalue)
+    else:
+      Option.take_action(self, action, dest, opt, value, values, parser)
+
+def location(idx,res):
+  return ( idx  % res[0], \
+         (idx // res[0]) % res[1], \
+         (idx // res[0] // res[1]) % res[2] )
+
+def index(location,res):
+  return ( location[0] % res[0]                   + \
+         (location[1] % res[1]) * res[0]          + \
+         (location[2] % res[2]) * res[0] * res[1]   )
+
+def prefixMultiply(what,len):
+  return {True: ['%i_%s'%(i+1,what) for i in range(len)],
+         False:[what]}[len>1]
+
+
+# --------------------------------------------------------------------
+#                                MAIN
+# --------------------------------------------------------------------
+
+parser = OptionParser(option_class=extendableOption, usage='%prog options [file[s]]', description = """
+Add column(s) containing curl of requested column(s).
+Operates on periodic ordered three-dimensional data sets.
+Deals with both vector- and tensor-valued fields.
+
+""" + string.replace('$Id$','\n','\\n')
+)
+
+
+parser.add_option('-v','--vector',      dest='vector', action='extend', type='string', \
+                                        help='heading of columns containing vector field values')
+parser.add_option('-t','--tensor',      dest='tensor', action='extend', type='string', \
+                                        help='heading of columns containing tensor field values')
+parser.add_option('-d','--dimension',   dest='dim', type='float', nargs=3, \
+                                        help='physical dimension of data set in x (fast) y z (slow) [%default]')
+parser.add_option('-r','--resolution',  dest='res', type='int', nargs=3, \
+                                        help='resolution of data set in x (fast) y z (slow)')
+
+parser.set_defaults(vector = [])
+parser.set_defaults(tensor = [])
+parser.set_defaults(dim = [])
+parser.set_defaults(skip = [0,0,0])
+
+(options,filenames) = parser.parse_args()
+
+if len(options.vector) + len(options.tensor) == 0:
+  parser.error('no data column specified...')
+if len(options.dim) < 3:
+  parser.error('improper dimension specification...')
+if not options.res or len(options.res) < 3:
+  parser.error('improper resolution specification...')
+
+resSkip = map(lambda (a,b): a+b,zip(options.res,options.skip))
+datainfo = {                                                               # list of requested labels per datatype
+             'vector':     {'len':3,
+                            'label':[]},
+             'tensor':     {'len':9,
+                            'label':[]},
+           }
+
+if options.vector != None:    datainfo['vector']['label'] += options.vector
+if options.tensor != None:    datainfo['tensor']['label'] += options.tensor
+
+# ------------------------------------------ setup file handles ---------------------------------------  
+
+files = []
+if filenames == []:
+  files.append({'name':'STDIN', 'handle':sys.stdin})
+else:
+  for name in filenames:
+    if os.path.exists(name):
+      files.append({'name':name, 'handle':open(name)})
+
+# ------------------------------------------ loop over input files ---------------------------------------  
+
+for file in files:
+  print file['name']
+
+  content = file['handle'].readlines()
+  file['handle'].close()
+  
+  #  get labels by either read the first row, or - if keyword header is present - the last line of the header
+
+  headerlines = 1
+  m = re.search('(\d+)\s*head', content[0].lower())
+  if m:
+    headerlines = int(m.group(1))
+  passOn  = content[1:headerlines]
+  headers = content[headerlines].split()
+  data    = content[headerlines+1:]
+    
+  regexp = re.compile('1_\d+_')
+  for i,l in enumerate(headers):
+    if regexp.match(l):
+      headers[i] = l[2:]
+
+  active = {}
+  column = {}
+  values = {}
+  curl_field ={}
+  head = []
+
+  for datatype,info in datainfo.items():
+    for label in info['label']:
+      key = {True :'1_%s',
+             False:'%s'   }[info['len']>1]%label
+      if key not in headers:
+        print 'column %s not found...'%key
+      else:
+        if datatype not in active: active[datatype] = []
+        if datatype not in column: column[datatype] = {}
+        if datatype not in values: values[datatype] = {}
+        if datatype not in curl_field: curl_field[datatype] = {}
+        active[datatype].append(label)
+        column[datatype][label] = headers.index(key)
+        values[datatype][label] = numpy.array([0.0 for i in xrange(datainfo[datatype]['len']*\
+                                          options.res[0]*options.res[1]*options.res[2])]).\
+                                          reshape((options.res[0],options.res[1],options.res[2],\
+							     3,datainfo[datatype]['len']//3))
+
+        head +=	prefixMultiply('curlfft(%s)'%(label),datainfo[datatype]['len'])
+        
+# ------------------------------------------ assemble header ---------------------------------------  
+
+  output = '%i\theader'%(headerlines+1) + '\n' + \
+           ''.join(passOn)                 + \
+           string.replace('$Id$','\n','\\n')+ '\t' + \
+           ' '.join(sys.argv[1:]) + '\n' + \
+           '\t'.join(headers + head) + '\n'                              # build extended header
+
+# ------------------------------------------ read value field ---------------------------------------  
+
+  idx = 0
+  for line in data:
+    items = line.split()[:len(headers)]
+    if len(items) < len(headers):                             # skip too short lines (probably comments or invalid)
+      continue
+    locSkip = location(idx,resSkip)
+    if (    locSkip[0] < options.res[0]
+        and locSkip[1] < options.res[1]
+        and locSkip[2] < options.res[2] ):                    # only take values that are not periodic images
+      for datatype,labels in active.items():
+        for label in labels:
+          values[datatype][label][locSkip[0]][locSkip[1]][locSkip[2]]\
+              = numpy.reshape(items[column[datatype][label]:
+                                    column[datatype][label]+datainfo[datatype]['len']],(3,datainfo[datatype]['len']//3))
+    idx += 1
+  else:
+    for datatype,labels in active.items():
+      for label in labels:
+        if label not in curl_field[datatype]: curl_field[datatype][label] = {}
+        curl_field[datatype][label] = numpy.array([0.0 for i in range((datainfo[datatype]['len'])*\
+                                                                                  options.res[0]*options.res[1]*options.res[2])]).\
+                                                                                  reshape(options.res[0],options.res[1],options.res[2],\
+                                                                                  3,datainfo[datatype]['len']//3)
+        curl_field[datatype][label] = DAMASK.math.curl_fft(options.res,options.dim,datainfo[datatype]['len']//3,values[datatype][label])
+    idx = 0
+    for line in data:
+      items = line.split()[:len(headers)]
+      if len(items) < len(headers):
+        continue
+    
+      output += '\t'.join(items)
+      
+      for datatype,labels in active.items():
+        for label in labels:
+          for i in range(3):    
+            for j in range(datainfo[datatype]['len']//3):    
+              output += '\t%f'%curl_field[datatype][label][location(idx,options.res)[0]][location(idx,options.res)[1]][location(idx,options.res)[2]][i][j]
+      output += '\n'
+      idx += 1
+ 
+  
+# ------------------------------------------ output result ---------------------------------------  
+
+  if file['name'] == 'STDIN':
+    print output
+  else:
+    file['handle'] = open(file['name']+'_tmp','w')
+    try:
+      file['handle'].write(output)
+      file['handle'].close()
+      os.rename(file['name']+'_tmp',file['name'])
+    except:
+      print 'error during writing',file['name']+'_tmp'
diff --git a/processing/setup/setup_processing.py b/processing/setup/setup_processing.py
index f77cc0529..999dec934 100755
--- a/processing/setup/setup_processing.py
+++ b/processing/setup/setup_processing.py
@@ -76,6 +76,7 @@ bin_link = { \
                 'addCalculation.py',
                 'addDeterminant.py',
                 'addDivergence.py',
+                'addCurl.py',
                 'addMises.py',
                 'addNorm.py',
                 'addStrainTensors.py',
@@ -111,7 +112,8 @@ execute = { \
                         '-c --fcompiler=%s '%(f2py_compiler) +\
                         '%s ' %(os.path.join(codeDir,'DAMASK2Python_helper.f90'))+\
                         '%s ' %(os.path.join(codeDir,'math.f90'))+\
-                        '%s ' %(os.path.join(damaskEnv.pathInfo['fftw'],'libfftw3.a'))+\
+                        '%s '
+			%(os.path.join(damaskEnv.pathInfo['fftw'],'lib/libfftw3.a'))+\
                         '%s' %(os.path.join(damaskEnv.pathInfo['acml'],acml_subdir,'libacml.a')),
                         'mv %s %s' %(os.path.join(codeDir,'DAMASK.so'),damaskEnv.relPath('lib/')),
                         ]