Issues after Upgrading to R3.5

[rachit]

After upgrade to R3,5 i am getting the below error for most of the packages
"was installed by an R version with different internals; it needs to be reinstalled for use with this R version"

I have to install all dependent package but its a never ending process.

Have tried installing with DEPENDENCIES = TRUE but with no luck.

eg : Error: package or namespace load failed for ‘qdap’:
package ‘igraph’ was installed by an R version with different internals; it needs to be reinstalled for use with this R version

[mara]

Yes. You need to re-install all of your packages when you upgrade to 3.5. See a more extensive discussion below:

Issues with packages after updating to R 3.5.0

Big changes behind the scenes in R 3.5.0 A major update to R is now available. The R Core group has announced the release of R 3.5.0, and binary versions for Windows and Linux are now available from the primary CRAN mirror. (The Mac release is forthcoming.) Probably the biggest change in R 3.5.0 will be invisible to most users — except by the performance improvements it brings. The ALTREP project has now been rolled into R to use more efficient representations of many vectors, resulting in less memory usage and faster computations in many common situations. For example, the sequence vector 1:1000000 is now represented just by its start and end value, instead of allocating a vector of a mil…