Error(s) in re-building vignettes:
--- re-building ‘ctstm.Rmd’ using rmarkdown
Loading required package: survival
OMP: Warning #96: Cannot form a team with 24 threads, using 2 instead.
OMP: Hint Consider unsetting KMP_DEVICE_THREAD_LIMIT (KMP_ALL_THREADS), KMP_TEAMS_THREAD_LIMIT, and OMP_THREAD_LIMIT (if any are set).
Quitting from lines 189-206 (ctstm.Rmd) 
Error: processing vignette 'ctstm.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘ctstm.Rmd’

--- re-building ‘icea.Rmd’ using rmarkdown
OMP: Warning #96: Cannot form a team with 24 threads, using 2 instead.
OMP: Hint Consider unsetting KMP_DEVICE_THREAD_LIMIT (KMP_ALL_THREADS), KMP_TEAMS_THREAD_LIMIT, and OMP_THREAD_LIMIT (if any are set).
Quitting from lines 169-177 (icea.Rmd) 
Error: processing vignette 'icea.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘icea.Rmd’

--- re-building ‘intro.Rmd’ using rmarkdown
OMP: Warning #96: Cannot form a team with 24 threads, using 2 instead.
OMP: Hint Consider unsetting KMP_DEVICE_THREAD_LIMIT (KMP_ALL_THREADS), KMP_TEAMS_THREAD_LIMIT, and OMP_THREAD_LIMIT (if any are set).
Loading required package: survival
Quitting from lines 262-269 (intro.Rmd) 
Error: processing vignette 'intro.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘intro.Rmd’

--- re-building ‘psm.Rmd’ using rmarkdown
Loading required package: survival
OMP: Warning #96: Cannot form a team with 24 threads, using 2 instead.
OMP: Hint Consider unsetting KMP_DEVICE_THREAD_LIMIT (KMP_ALL_THREADS), KMP_TEAMS_THREAD_LIMIT, and OMP_THREAD_LIMIT (if any are set).
Quitting from lines 179-198 (psm.Rmd) 
Error: processing vignette 'psm.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘psm.Rmd’

SUMMARY: processing the following files failed:
  ‘ctstm.Rmd’ ‘icea.Rmd’ ‘intro.Rmd’ ‘psm.Rmd’

Error: Vignette re-building failed.
Execution halted