R help - Oct 2020 - Call to R.exe in a Script fails since the upgrade from R 3.6.1 to R 4.0.2

Dear R Community,  
  
I call R from within a software called ?IDEA?
([www.casewareanalytics.com](http://www.casewareanalytics.com)). This language
uses its own scripting language, but it is very similar to Visual Basic. The
basic call is as shown below:


R_Command is a string of the form (the Chr(34) creates a double quote):
In my file ?script.R?, I then start everything by:
This has worked perfectly up to R 3.6.1. But since I migrated to R 4.0.2, this
command does not create the ?log.txt? anymore. The script runs, it finds the
arguments in the file ?nga_config.R?, generates the output data, but then does
not write the log.txt. However, when I run this R_command on the command line in
Windows, all works fine: the log.txt is created. So the syntax is correct.
In the R windows FAQ, i see this:  
  
### 2.12 Can I use?`R CMD BATCH`?  


Yes: use?`R CMD BATCH --help`?or?`?BATCH`?for full details.  


You can also set up a batch file using?`Rterm.exe`. A sample batch file might
contain (as one line)



I tried this, but I have the same issue: the output file ("log.txt")
is not crated. Also, choosing R.exe and Rterm.exe has no impact.
  
Do you know whether something has changed in R 4.* that could cause this issue?
  
Thanks for your help. Happy to do a Skype/Teams/Zoom session anytime!  
  
Best regards  
  
Marcel Baumgartner  
  


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