diff --git a/DESCRIPTION b/DESCRIPTION
index 26d2864..c5de43f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: tryCatchLog
 Title: Advanced 'tryCatch()' and 'try()' Functions
-Version: 1.2.3
+Version: 1.2.4
 Authors@R: c(
   person("Juergen", "Altfeld", email = "jaltfeld@altfeld-im.de", role = c("aut", "cre", "cph")),
   person("Charles", "Epaillard", email = "charles.epaillard@gmail.com", role = "ctb"),
diff --git a/NEWS.md b/NEWS.md
index 23cfa44..55e4a3b 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -5,7 +5,14 @@ For the conventions for files NEWS and ChangeLog in the GNU project see
 https://www.gnu.org/prep/standards/standards.html#Documentation
 -->
 
-## Version 1.2.3 (May 16, 2021) for CRAN
+## Version 1.2.4 (May 21, 2021) for CRAN
+
+* Fix redirected links found by CRAN precheck:
+  * Found the following (possibly) invalid URLs:
+    URL: https://rstudio.com/products/rstudio/ (moved to https://www.rstudio.com/products/rstudio/)
+    From: inst/doc/tryCatchLog-intro.html
+
+## Version 1.2.3 (May 16, 2021) - submitted at CRAN but rejected
 
 * Fix bug #64: Unit tests fail on R-devel (test_build_log_entry.R and test_build_log_output).
   Many thanks to Brodie Gaslam to find and help fixing this bug!
diff --git a/README.md b/README.md
index f579760..bc18e3a 100644
--- a/README.md
+++ b/README.md
@@ -728,6 +728,9 @@ Further links:
 * Build source package and upload the release candiate (*tar.gz file) at win-builder to check for errors.
   (see instructions: https://win-builder.r-project.org/). There is an [upload page](https://win-builder.r-project.org/upload.aspx) for R-release, R-devel and R-oldrelease.
 * Finally upload the release candiate file to CRAN via their submission page: https://cran.r-project.org/submit.html
+* Re-submission is done in the same way as submission, using the ‘Optional comment’ field on the web form to explain how the feedback on previous submission(s) has been addressed.
+* Updates to previously-published packages must have an increased version.
+ Increasing the version number at each submission reduces confusion so is preferred even when a previous submission was not accepted. 
 
 
 ### How to build the package using R-devel (development version of R)
diff --git a/vignettes/10_standard_R_conditions.Rmd_child b/vignettes/10_standard_R_conditions.Rmd_child
index 867d73e..6e95796 100644
--- a/vignettes/10_standard_R_conditions.Rmd_child
+++ b/vignettes/10_standard_R_conditions.Rmd_child
@@ -319,7 +319,7 @@ See the next chapters for possible work-arounds...
 
 ## Interactive debugging
 
-You can run and debug your R script interactively in the *RGui* or [RStudio](https://rstudio.com/products/rstudio/)
+You can run and debug your R script interactively in the *RGui* or [RStudio](https://www.rstudio.com/products/rstudio/)
 instead of condition handling with `tryCatch`.
 
 For more details on interactive debugging see `?debug`.
diff --git a/vignettes/README_FIRST.txt b/vignettes/README_FIRST.txt
index 7c790e0..40bc538 100644
--- a/vignettes/README_FIRST.txt
+++ b/vignettes/README_FIRST.txt
@@ -8,6 +8,7 @@ As a workaround I had to
    that has a pattern to match all child file names
    (this file is NOT shown in RStudio since it starts with a dot - any workaround for that?)
 3. added empty dummy files to the "inst/doc" folder for each child Rmd file.
+   Update May 21, 2021: I cannot find an inst folder in git. Is this step deprecated due to the use of .install_extras?
 
 This avoids
 1. failures to build the vignette due to missing child Rmd files