AFx Library library exception: File: ..\..\Dataset2\Dataset2.dataset cannot be found. . ( Error 1000 ) - r

Question

I have a simple Azure Machine Learning experiment, with two input blocks ("Enter Data Manually") that pass their input to an "Execute R Script" block that binds the two inputs.
When the two input values are the same, I get an AFx Library exception FileNotFound. When the two input values are different, everything works fine.
Here is the R code and the experiment outline.
d1 <- maml.mapInputPort(1) # class: data.frame
d2 <- maml.mapInputPort(2) # class: data.frame
print(d1)
print(class(d1))
print(d2)
print(class(d2))
The error I get when I set the same input data in the two input blocks, in more detail is the following:
[Critical] Error: Error 1000: AFx Library library exception: File: ..\..\Dataset2\Dataset2.dataset cannot be found.
[Critical] {"InputParameters":{"DataTable":[{"Rows":2,"Columns":1,"estimatedSize":12001280,"ColumnTypes":
{"System.Int32":1},"IsComplete":true,"Statistics":
{"0":[1.5,1.5,1.0,2.0,0.70710678118654757,2.0,0.0]}}]},"OutputParameters":
[],"ModuleType":"LanguageWorker","ModuleVersion":"
Version=6.0.0.0","AdditionalModuleInfo":"LanguageWorker, Version=6.0.0.0,
Culture=neutral, PublicKeyToken=69c3241e6f0468ca;
Microsoft.MetaAnalytics.LanguageWorker.LanguageWorkerClientRS;
RunRSNR","Errors":"Microsoft.Analytics.Exceptions.ErrorMapping+ModuleException:
Error 1000: AFx Library library exception: File: ..\\..\\Dataset2
\\Dataset2.dataset cannot be found. --->
Microsoft.Numerics.AFxLibraryFileNotFoundException: File: ..\\..\\Dataset2
\\Dataset2.dataset cannot be found.\r\n at
Microsoft.Analytics.IO.Local.DataTableReader..ctor(String filePath)\r\n at
Microsoft.MetaAnalytics.DllModuleHost.DataLab.Handlers.DataTableDatasetHandler.H
andleArgumentString(String argument, ParameterInfo paramInfo)\r\n at
Microsoft.MetaAnalytics.DllModuleHost.ParameterArgumentBinder.InitializeParamete
rValues(MethodInfo method, Dictionary`2 moduleDescription)\r\n at
Microsoft.MetaAnalytics.DllModuleHost.DllModuleMethod.Execute(Dictionary`2
moduleDescription)\r\n at
Microsoft.MetaAnalytics.DllModuleHost.Program.Main(String[] args)\r\n --- End
of inner exception stack trace ---","Warnings":[],"Duration":"00:00:00.5755180"}
Module finished after a runtime of 00:00:01.4722617 with exit code -2
Module failed due to negative exit code of -2
Any suggestion is much appreciated, Flo.

Answer 1

You should get rid of the R code referencing the second dataset because you only have one input dataset.