Hi,
I try to build a tool that export report to pdf file.
I used this example: ArcGIS Help 10.1 and I added parameters to a toolbox and write the python script:
# Date: November 11, 2014
# parameters:
# 1) Select Map Documents,
# 2) select data frame
# 3) Select Layer (points).
# 4) select report file (RLF).
# 5) Export report as pdf file.
import arcpy
#Read input parameters from script tool
#Select Map Documents
mxdPath = arcpy.GetParameterAsText(0)
#select data frame
dfName = arcpy.GetParameterAsText(1)
# Select Layer (points).
feature = arcpy.GetParameterAsText(2)
#select RLF file
report= arcpy.GetParameterAsText(3)
#select PDF file name
exportfile= arcpy.GetParameterAsText(4)
mxd = arcpy.mapping.MapDocument(mxdPath)
df = arcpy.mapping.ListDataFrames(mxd, dfName)[0]
lyr = arcpy.mapping.ListLayers(mxd, feature, df)[0]
arcpy.mapping.ExportReport(lyr,report,exportfile)
del mxd
Error message:

Someone have an idea what can be the the reason for this error?