When loading data in Rstudio getting error “ReadItem: unknown type 161, perhaps written by later version of R”?

问题

When I am trying to load a clean data in Rstudio, file name called salesClean.RData, I am getting error.

Error message is: ReadItem: unknown type 161, perhaps written by later version of R

Screenshot of error message:

回答1:

Here is what worked for me:

Simple Solution:

Try to use the tool Load Workspace. It allows you to select the Rds file and load it into memory.

Best Solution:

In some cases you do need to load the file programatically. In these situations you will probably prefer get your R up to date. You can do this by running the code:

install.packages("installr")
require(installr)
updateR()

Also, you can update your installed packages in RStudio on Tools > Check for packages updates.

回答2:

Make sure that you're using the latest version not only of Rstudio, but R as well. Try sessionInfo() command, it should say that you have R version 3.1.2.

回答3:

In my case, finally I found it's because the hard disk under my root is full. I freed some disk memory and re-saved the .RDdata file, the load works again.

来源：https://stackoverflow.com/questions/28155563/when-loading-data-in-rstudio-getting-error-readitem-unknown-type-161-perhaps