R nodes hang

Hi,

I am using Knime since long time now. I had to install in a new computer (windows 10), Knime 3.7 and R 3.5.1 with Rserve v.1.7.3. While the same workflow works in my other computer with the same versions, in the new installation I could not make run the R nodes. They hang and I have to finally kill Knime. I have several R nodes in a loop and I run it locally.

I try to install older versions of R, because I read about the conflict of R 3.5 and Rserve, however it did not work. I also try to install Rserve 1.8.6 using Rstudio but it gives me an error:

Warning in untar2(tarfile, files, list, exdir, restore_times) : failed to copy 'Rserve/src/client' to 'Rserve/clients' installing source* package 'Rserve' ... Warning in system("sh ./configure.win") : 'sh' not found ERROR: configuration failed for package 'Rserve' * removing 'C:/Users/Guest1/Documents/R/win-library/3.5/Rserve' * restoring previous 'C:/Users/Guest1/Documents/R/win-library/3.5/Rserve' Warning in file.copy(lp, dirname(pkgdir), recursive = TRUE, copy.date = TRUE) : problem copying C:\Users\Guest1\Documents\R\win-library\3.5\00LOCK-Rserve\Rserve\libs\x64\Rserve.exe to C:\Users\Guest1\Documents\R\win-library\3.5\Rserve\libs\x64\Rserve.exe: Permission denied In R CMD INSTALL Warning in install.packages : installation of package ‘C:/Users/Guest1/Downloads/Rserve_1.8-6.tar.gz’ had non-zero exit status

I checked the Knime log and I get:

DEBUG: Service Thread: MemoryAlertSystem : : : Memory usage below threshold (85%) after GC run, currently 6% (0.17GB/2.63GB)

Any suggestions?