找不到函数中的对象

Question

I recently updated to R 3.4.0 and I am running Linux Mint 17.1. When I first updated R everything worked fine (I think). Now many basic functions from different packages fail. In every case it appear that the function calls another function internally but then can not find the temporary object that was created. Here is an example:

   > library(nlme)
   > fm1 <- gnls(weight ~ SSlogis(Time, Asym, xmid, scal), Soybean, weights = varPower())
   Error: object 'fit_gnls' not found

The exact same error occurs for many functions from many packages and I am stuck. Any suggestions would be welcomed. I did try a complete reinstall of R, with no effect.

Answer 1

It turns out that there were updated versions of many packages available but the "update packages" button in Rstudio was telling me that they were all up to date. I ran update.packages() and all is working again.